Fancy works with Martinez to help him get ready for the inter-precinct boxing tournament. Meanwhile, Simone is attracted to the new undercover cop, Diane Russell, who is working with him to catch a wanted arsonist in a sting in which Lt. Fancy's informant, Vinny Greco, returns to offer more advice and annoyance to everyone. Elsewhere, a woman that Sipowicz gets to testify in a case is murdered by the men she was going to testify against, and Sipowicz tries to prevent the murdered woman's husband from going after the gang members responsible.

Simone and Sipowicz search for a killer of a bookie in which Mike Roberts returns to offer his help. Meanwhile, Donna returns from her long vacation trip to resume her position at the station and her temp, John Irvin, gives everyone farewell greeting cards when he is moved to the anti-crime lab upstairs. But Donna continues to treat Medavoy with resentment which leads to him thinking that she might be finished with him. Simone's obsessive witness, Joyce Novak, goes too far when Simone rejects her advances after he tells her that she will not testify in the upcoming trial. This leads to Joyce attempting to murder Diane Russell when she correctly assumes that she and Simone are romantically involved. Sipowicz and Sylvia meet with the priest to help with their wedding and later she hears a story about what has contributed to Sipowicz's loss of faith.

A witness to a crime smells alcohol on Russell's breath and uses it against her, and Sipowicz smells the same. Simone then confronts Russell about her drinking, but she tells him to mind his own business. John Irwin comes to Fancy for help when he and his gay lover are beaten up by gay-bashing officers in another precinct. Meanwhile, a terminally ill infant helps the detectives locate a serial rapist. Medavoy meets with his ex-wife who tells him that they should get back together for their kids and when Donna finds out, she tells him that their relationship is over.

Pre-wedding jitters put Sipowicz in a rare form of panic whereas Sylvia remains perfectly calm. While investigating a murder in Chinatown, Russell's drinking problem makes her miss getting a gun off a suspect and she finally admits to Simone about her alcoholism. Meanwhile, Fancy's brother, Reginald, is still having problems with his racist sergeant and his belligerent attitude has resulted in him being investigated by Internal Affairs. So Fancy, Simone, and the squad work together to help clear Reginald of any misconduct. Martinez finally goes out on a date with Lesniak and asks her to be his date for the wedding. At the ceremony, Simone is Sipowicz's best man, Sylvia's father escorts her down the aisle and even Andy Jr. makes it just in time for the ceremony. Medavoy brings his ex-wife to the wedding while a lonely and jealous Donna painfully watches from afar.

Martinez is shot in the back during a scuffle and the doctor's report is possible that he may be paralyzed for life. But Martinez's assailant, a government witness in a relocation program, will probably go free and Simone contacts reporter Benita Alden, his former girlfriend, to help put pressure on the D.A. to prosecute their protected witness. Meanwhile, Russell, on the road to recovery from her alcoholism, wants Sipowicz to let Simone know she's doing okay but she is on the brink of falling off the wagon. Donna expresses to Simone that she has feelings for him, and Sylvia tells Sipowicz that she may be pregnant.

Medavoy and Sipowicz go undercover as Hasidic Jews to recover a stolen Torah. Meanwhile, Simone gets a case where a father suspects his intellectually disabled son of killing his daughter. Detective Stuart Morrissey tactics with the suspect does not sit well with Lt. Fancy, despite the facts that the case match the one Simone are working on. Also, Sylvia visits a doctor who confirms that she's pregnant, and Lesniak keeps checking up on Martinez still in the hospital.

Meadavoy and Lesniak pair up to identify who's launched a series of vicious attacks on a man. Meanwhile, Simone tries to locate a possible suspect in a series of rapes. Russell tries to maintain her sobriety and it's strongly tested when her parents domestic problems get out of hand. Also, Martinez finally gets out of the hospital and returns to duty. But in a final surprising twist, Lesniak tells Martinez that she likes him as friend only... because she happens to be gay.

Lesniak's preference of her lesbianism quickly gets around the precinct, which gives her mixed reactions. Meanwhile, Sipowicz clashes with Simone throughout their investigation of the senseless murder of two kids, which is only the start of a really bad day which also includes Sipowicz dealing with Sylvia's morning sickness, and Simone dealing with Russell who falls off the wagon.

Fancy is less than enthused when Ronnie Drucker, a detective under surveillance by Internal Affairs, is assigned to the squad and Simone is asked to keep an eye on him. Both Drucker and Simone work on a case where an elderly man has been accused of exposing himself to a young boy. Sipowicz, Martinez, and Russell investigate the murder of a pimp in a laundromat which is witnessed by a young homeless woman who turns out to be Holly, the teenage runaway who helped the detectives out on a previous case (from 'The Bank Dick' episode). Meanwhile, John Irvin asks Sipowicz if he should approach Lesniak to congratulate her on "coming out." But she won't listen to his gay pride talk as does everyone else.

An Indian woman is found dead in a car and Sipowicz is full of theories about who killed her and why. While Donna is away at a computer camp taking courses for the week, her temp is a feisty middle-aged woman, named Evelyn, who has bad attitude and who clashes with Sipowicz and others in the squad as well. Meanwhile, Martinez and Medavoy are nearby when a drug crazed man, named Marv, tries to rob a couple of stores of credit card slips. Russell and Lesniak work on another case involving a man who was left to die of a drug overdose that leads to a chance of mending the feud between them.

Sipowicz becomes annoyed when federal agents take over their investigation of the disappearance of a millionaire. Then a petty criminal from the past surfaces with information about the kidnapping and Sipowicz decides to act on it. Meanwhile, Simone aids an old boxer friend of his, who happened to got him started with bird breeding.

Simone and the men from Internal Affairs share the suspect after Simone gets some information from his incarcerated friend, Ray, about a case that Mike Roberts once worked on. Meanwhile, Fancy and Sipowicz both work on the case of a self-confessed gunman in a neighborhood shooting, once they get the story they help the shooter out. Medavoy investigates the assault case of an actor who was injured in a staged fight that went awry.

Medavoy and his wife, Marie, split up once again and she comes down to the station to have some hard words with Donna, while he decides to crash there since he cannot afford a place to live. Meanwhile, Simone and Sipowicz team up with Detective Harold Ng to probe the death of a Chinese girl whose leg has a strange marking on it which may have been self inflicted. Martinez and Lesniak look into the robbery case where a woman in a wheelchair lets a man claiming to be a policeman into her apartment, while the husband reveals a clue to Martinez that he has been seeing a prostitute on a regular basis and whose pimp might have planned the robbery. Elsewhere, Sipowicz does not want to accompany Sylvia to her latest doctor's visit, and Martinez gets an opportunity to find out where Lesniak really stands on her sexuality if she's really gay.

Sipowicz has race relation problems with the organizer of a local basketball game, held in the memory of a young boy, which erupted into violence by the gang members on the opposing sides which left two dead and seven wounded, and was witnessed by a reporter. Fancy has problems when Sipowicz racist colors come to light and has him removed from the case, much to his anger.

Simone and Sipowicz look into the death of a young woman whose body is found burned beyond recognition, except for a tattoo on her back. Detective Vince Gotelli arrives from another precinct to assist Simone and Sipowicz with their case and puts his two cents in, much to Sipowicz's delight and one of the victim's roommates becomes the prime suspect. Meanwhile, Medavoy pulls double shifts for himself (to get away from problems at home) and is assigned to watch an informant who has a penchant for playing poker with his friends.

A strange woman walks into the precinct and gives Sipowicz and Medavoy some information about a disappearance that occurred eight years ago and where the body may be located. Meanwhile, domestic violence in Russell's parents apartment leads to tragedy when her drunken father is found murdered in their apartment and her brother, Doug, claims to have shot him in self defense. But Simone thinks otherwise and presses to get the truth about what really happened to her Russell's father and soon learns that Russell's simpleton mother in fact did the deed and Doug is trying to take the rap out of blind loyalty to the family.

Russell worries about her mother's pending grand jury trial for the intentional murder of her father. Meanwhile, Sipowicz and Simone search for the killer of a mobster's son, that reveals a family affair. The pompous lawyer of a suspect in another murder case impedes Medavoy and Russell's investigation and the erratic behavior of son of the victim doesn't help much either. Also, Martinez and Lesniak investigate another murder case that may be connected to Sipowicz and Simone's murder suspect who now may be on a killing rampage.

Donna and Simone give Lesniak and Martinez advice, respectively, on their plans for their first date and night together. Afterward, Simone and Sipowicz investigate the death of a young woman who was brutally murdered in her apartment and Simone and Martinez travel to Atlantic City to apprehend their suspect. Meanwhile, Medavoy and Russell try to find the perps who shot a wealthy and shallow surgeon during a mugging, and they also deal with surgeon's petulant wife who wants to press charges against her husband's mistress when she learns that she was in his company during the robbery.

Simone and Sipowicz get another murder case where a mild mannered professor is found decapitated in his apartment. Meanwhile, Martinez is helping out a former porno actress who is getting harassing phone calls, but Lesniak is not comfortable with the situation. Andy Jr. arrives in town with some news for Sipowicz, but he can't find the time to tell his father and finally at dinner, he explains that he has just been discharged from the Air Force and is joining the police department in Hackensack, New Jersey.

A detective from another precinct, Martina Escobar, joins Simone and Sipowicz with their investigation of a rapist/murderer who is throwing small children from the tops of buildings. Meanwhile, Martinez and Russell investigate an alleged case of date rape, but the women of the squad and Sylvia have a major disagreement with Martinez's decisions regarding the suspect. Elsewhere, Sipowicz shows his son the ropes of being a cop.

Simone makes contact with Ferdinand Hollie, an old informant, who wants to help him capture a pair of Colombian drug dealers who killed a young girl with their crossfire. But Hollie, a drug addict who is HIV-positive, has his own agenda to rob the Colombians. Meanwhile, Russell is paired with Sgt. Ray Kahlins, a "blowhard" from the federal anti-drug unit who is more interested in collecting overtime pay than catching a separate pair of drug dealers during a stake out. But Kahlins' brash tactics and disrespect for Simone and his informant Hollie, put both cases at risk. Also, Medavoy and Martinez investigate the murder of a Santería priest found in a local sewer and try to link a parole officer and a recent parolee to the crime.

Simone and Sipowicz help a local FBI agent, named Mike Frances, to investigate the murder of a local Italian mobster. However they are forced to commit robbery while working undercover for Agent Francis, and have to place a bug in the mob hangout. When two wise guys come to the station to file a robbery complaint, Russell and Medavoy catch them in the act of filing a false report. Meanwhile, Donna's hairdresser, Marina, tells her that she has a problem with her ex-boyfriend. He wants to hijack Marina's current boyfriend's truck, and Martinez goes undercover as Marina's boyfriend. But Lesniak is unable to hide her jealousy and possessiveness. Elsewhere, Andy Jr. learns more about being a beat cop with more pointers from his father Sipowicz Sr.

Sylvia is now nine months pregnant and ready to give birth any day so Sipowicz is on the edge. Meanwhile, Simone and Sipowicz, with Andy Jr. along for the ride, investigate a case where the drug-addicted nephew of the victim of a robbery-homicide is found holding the stolen goods. Meanwhile, Medavoy, Martinez, Lesniak, and Russell all join forces to work on the robbery-murder of a bouncer where the leads first lead to a biker, then to a check cashing forger, and to his co-worker. In the mist of the investigation, Martinez and Lesniak finally reach an agreement that they are not right for each other and quietly break up by agreeing to try a platonic relationship. Also, Donna contemplates an administrative job offer in California.

Just days after Sylvia gives birth to a baby boy (Theo), Sipowicz suffers an emotional setback when Andy Jr. is found murdered in the line of duty. Sipowicz wants Simone to lead the case of his son's killer and also wants the opportunity for restitution. With Russell in tow, Simone tries to balance his desire for revenge, as well as his quest for justice to catch the killers. While Sipowicz breaks the news of his son's death to his first wife, Katie, he begins to show signs of an emotional breakdown. In the midst of all this turmoil, Donna makes her decision when she quits her job as administrative assistant to the precinct and moves to California, leaving New York for good.

Sylvia confronts Sipowicz about her suspicions that he is going to late-night bars and drinking again, and the effect is everywhere. Lt. Fancy is forced to sent him home after Sipowicz walks in one morning drunk. Sipowicz even fights with some street punks, gets beaten up, and Simone offers to look for the men that beat Sipowicz up. Meanwhile, a new administrative assistant, named Lucy, arrives as Donna's replacement. Also, Russell investigates a young woman, named Angela, who claims to have been stabbed by her jealous boyfriend. Simone, following a lead from a streetwalker named Deena, finally tracks down and confronts the two thugs who murdered Andy Jr. and guns them both down in a hail of bullets.

Sipowicz meets with a priest to talk about his troubles and finally sees the light. Afterwards, he, Simone, and Russell work together to investigate a robbery where an auto mechanic got shot to death. Following the apprehension of a wounded suspect, the detectives also arrest the suspect's younger brother who is unwilling to make a statement against his brother out of blind loyalty. Meanwhile, Medavoy works on finding a new place to live while he, Martinez and Lesniak work on finding the suspect of a drug-related double murder. John Irvin passes out farewell notices to the employees when he announces that he is moving back to the 1st Precinct uptown. Simone and Russell plan a trip to the beach. Medavoy meets Anne McGuire, a new detective, while working on his case. Elsewhere, Lucy is disruptive at work and Fancy tries to find a way to transfer her out of the building. Baby Theo gets baptized which seems to bring Sipowitz and Sylvia back together.

Medavoy decides to go on a diet and has a hard time getting started on it. Meanwhile, Sipowicz has problems with his work, his baby son's illness and Sylvia deciding to return to work at the D.A.'s office. Simone proposes marriage to Russell, but she is hesitant to give him an answer. Martinez has eyes for Gina Colon the new administrative aide for the anti-crime unit since Lesniak has been transferred from the squad to another precinct, thus leaving the 15th for good. But none of the men are turned on by Donna's latest replacement, a frumpy lady named Gerri Turner as the PAA for the squad but she has a strong interest in Sipowicz. A body in a trunk of a car is inadvertently moved from the nearby 13th precinct into the 15th's jurisdiction. Elsewhere, Simone inherits an apartment building from a recently deceased woman and the woman's son, Henry, is upset at the situation.

Medavoy starts a bet with Sipowicz to see who can lose the most weight in a single month. Afterwards, Sipowicz and Simone help out Detective Stuart Morrissey on his investigation in the case of a missing baby. Meanwhile, Martinez campaigns to become the elected delegate for the squad and his opponent, Detective Vince Gotelli, is determined to win the seat himself. Also, Simone makes a deal with Henry to let him share ownership of the building.

An ex-con that Sipowicz put away a year ago approaches him and tells him about a prisoner who's been serving time for a crime he didn't commit and he and Simone decide to reopen the case. Meanwhile, Martinez wins the election by just three votes, much to Gotelli's chagrin. Simone comes across Detective Nick Savino who helps him with the investigation of the murder in his building and Savino suspects Henry has something to do with it. Fancy gets a cavity filling which makes him more edgy than usual and Medavoy loses one pound more than Sipowicz. Also, Russell still has not come to any conclusion about her relationship with Simone.

An African-American community activist, named Kwasi, with whom Sipowicz had a previous run-in, is found murdered in a drive-by shooting. Simone and Sipowicz investigate, and Sipowicz rekindles Fancy's and Kwasi's family's anger over the previous incident. Meanwhile, Martinez and Medavoy investigate a homicide at a bodega and have a hard time getting witnesses to cooperate.

A foreign prince and princess are assaulted - the princess goes into a coma. Sipowicz and Simone investigate, with Mike Roberts help, who provides them with some information about Prince Foresmann's contacts over some stolen artwork. Meanwhile, Martinez's first delegate situation gets a resolution that keeps Officer Ortiz out of trouble with the department. This doesn't work out as planned when two women claiming to be his wife are arrested in a scuffle. Russell begins a new undercover job that involves her getting into a relationship with alleged drug dealer, Jimmy Liery, that might require her to start drinking again. Elsewhere, Geri continues to try to win Sipowicz's affections and Medavoy for once feels good about himself after his diet. Also, Martinez asks the anti-crime PAA, Gina Colon, out on a date.

Simone and Sipowicz look into the death of a limo driver and try to find his last clients which included a gay businessman trying to cover up his secret cruising lifestyle. At the same time, Sipowicz finally lodges a complaint against Geri that gets her moved up to the crime lab area, while Gina is transferred down to the squad floor. Meanwhile, a new detective, Jill Kirkendall, joins the squad. Her first case involves investigating a man whose life is being threatened and this leads Kirkendall to suspect that the man's assailant's girlfriend has a stolen infant. Simone gets the approval from Detective Savino to question Henry about the apartment shooting and finally gets the real story. Also, Russell can't figure out how to talk to Simone about her current assignment.

Simone and Sipowicz investigate a claim of sexual assault against a mentally disabled 17-year-old schoolgirl, after her domineering and verbally abusive mother reports it. They try to persuade her to press charges against the two assailants. The alleged assailants are from privileged backgrounds who attend an exclusive prep school. One is the son of sleazy councilman Paul Manos, with whom the detectives had problems a year earlier. Meanwhile, a young man who speaks only gibberish, known to Sipowicz who had him committed four years ago, appears at the station and causes a minor scene -- trying to get someone to listen to him about a problem he now has. Sipowicz investigates. Meanwhile, Russell continues her undercover work and relationship with Jimmy, who shows off his true psychopathology when he beats up a roller blader who had accidentally bumped into Russell.

Simone and Sipowicz investigate a case where two transvestites witnessed a murder that they say was committed by a 'gay-basher' who's supposed to have been in jail for a previous crime. Meanwhile, Fancy's former foster son is arrested and charged with possession of a kilogram of heroin. He tries to make a deal with Sgt. Ray Kahlins, the "blow hard" from the DEA who worked out of the squad room the previous year, to nab the drug dealers. Medavoy finally asks out Abby Sullivan, the beat cop from the anti-crime unit upstairs. But she turns him down by revealing that she is a lesbian. Elsewhere, Russell gets more deeper involved in her undercover work which puts a strain on her relationship with Simone. But the psycho Jimmy's malevolence puts Russell's life in danger when he puts a drug in her drink.

While tracking down Jimmy, who drugged and date-raped her the previous night, Russell works with Martinez and Medavoy on a case where a man with a muscular dystrophy was killed in a very tight knit community. Meanwhile, Simone and Sipowicz work on another murder case that may have been masterminded by a married couple. Also, Fancy wrestles with Captain Bass and knowledge of the fact that Simone is going to be promoted to Detective 1st Grade, and Sipowicz isn't.

A woman comes into the station to report that there's a bullet hole in her wall. The gun is found in Jimmy Liery's apartment and Simone arrests Jimmy, but has to let him go as there isn't enough evidence to hold him. Simone finds out that Russell unsuccessfully attempted to scare Jimmy by firing a shot over his head. Simone decides to remove Jimmy unlawfully by setting him up to take a fall. Meanwhile, Sipowicz is still angry at Fancy who thinks he held up his promotion. Following a tip from a young runaway teenage boy, named Marco, Medavoy and Martinez investigate the murder of an apartment building tenant. Also, artist Walter Hoyt (from ep. UnAmerican Graffiti) returns and wants the detectives help to get his paintings returned from some mob guys that he is a witness against.

Simone and Sipowicz investigate a story that a diamond dealer and his partner report that one of the dealer's sisters is missing with a bag of diamonds worth a million dollars, but the sister's boyfriend is actually responsible. Meanwhile, Martinez, Medavoy and Russell look for the assailant of Gina who badly slashed her face up while she was on her way to work, and Martinez cannot cope with this sudden turn of events. Simone and Kirkendall go out on their first date, while Russell cannot cope with the fact of being alone again.

Simone and Sipowicz investigate a murder, but the procedures they must follow make them unpopular at the precinct when a fellow cop might have been involved. Meanwhile, Medavoy and Kirkendall investigate the murder of a young girl where the only clue is a videotape that starred her crushing worms. Russell goes missing and eventually turns up in Simone's apartment where she recalls to him that her father molested her as a child.

Simone, Sipowicz, Medavoy and Martinez together conduct an investigation into the death of a worker at a construction site, where more than a building is being framed and try to sort out a feud between two different unions. Meanwhile, Geri reports to Sipowicz about finding a friend of hers who has hung himself and Fancy suggests that Russell and Kirkendall conduct the investigation, which reveals the man died from kinky sex... with Geri. But the dangerously disturbed, sex-obsessed Geri will not speak to anyone about the case except for Sipowicz whom she has an obsessive crush on. Martinez stays close to Gina while she is recovering and preparing to get her stitches from her horribly scared face removed and offers him to let her stay the night with him.

Simone and Sipowicz investigate the murder of a woman whose body was found naked in the trunk of a car in a junk yard which leads them to a pervert with a penchant for lookalike porn actresses. Meanwhile, Martinez and Medavoy investigate a man who was found dead with a severe blow to his head from a typewriter. Simone hires Henry to take care of a painting job in the tenement building, where Henry comes in complaining about a difficult tenant. The emotionally and physically scarred Gina returns to work (with a large vertical scar across her left face), and Russell is working through her issues with her family problems by meeting a counselor.

Fancy and his wife are pulled over and harassed by a racist police officer for a burned out taillight, and he and the precinct commander, Captain Bass, don't see eye to eye on the procedures followed during the stop. Meanwhile, Sipowicz has some unresolved issues to work out Andy Jr.'s death when he begins having a string of dreams involving his late son. At the same time, Sipowicz works with Simone on a rare night duty and gets a case involving trying to find the perpetrators of a bar robbery, while Simone locks horns with the conniving Detective Eddie Hazell who is seeking to derail Simone's investigation to take the credit for nabbing the robbers all by himself. Also, Medavoy, Martinez and Russell work together on a sting operation to catch two female con artist investors defrauding old and crippled women.

Sipowicz and Simone investigate the murder of a woman whose body was found dumped in an alley and information about the mystery woman reveals that the woman was a mail-order bride from Russia who was looking to divorce her husband. Meanwhile, Medavoy and Martinez look into the drive-by shooting on a city bus. When one of the passengers mouths off his hatred of gays, both Medavoy and Abby become angry in which Medavoy slides on a further decline when he breaks his diet and begins to show off aggressive methods against the smart-mouthed gang members they bring in for interrogation. Elsewhere, Sipowicz starts working a part-time job for the U.S. Marshall by doing garbage detail at J.F.K. airport.

Simone and Sipowicz investigate a shooting that is related to the victim trying to leave a street gang. Meanwhile, Kirkendall and Russell investigate the death of a baby who appears to have been shaken to death by the baby-sitter. Medavoy and Martinez look into a murder at a garage where they have a suspect who looks guilty despite the fact he claims to have an alibi. That evening, Medavoy has dinner with Abby and her lover, Kathy. Also, Simone takes Russell out to a movie and proposes to her again, and this time she accepts.

Two trans women, named Angela and Peaches who assisted Russell on a previous case, arrive at the precinct where 'Angela' is seeking protection from a man who's beaten him. But afterwords, Angela is founded murdered and Sipowicz, Simone and Russell investigate. They eventually receive help from Simone's former junkie informant, Arthur Cartwell, to find the perp. Meanwhile, Kirkendell investigates the theft of some small items by a old friend's parents. Kirkendell confronts her old school friend, Lucy Hastings, to persuade her to return the items as well as enroll in a substance abuse program. Elsewhere, Fancy's wife, Lillian, tries to sell some health food products at the precinct, but Fancy begins to think that it is not a good idea.

Simone and Sipowicz get another case involving the shooting of a rap artist who refuses to cooperate with them in the identification of his assailant. Meanwhile, Abby tells Medavoy that she and Kathy are trying to start a family and asks him to donate his sperm to her so Abby will get pregnant. Officer Szymanski, the racist cop who pulled over Fancy, tells him that he thinks Fancy was one of the ones responsible for his being set-up and caught in the alleged theft of a drug dealer's money. Also, Simone is approached and propositioned by FBI agents to help them with their ongoing investigation into the affairs of mobster Joey Salvo. Elsewhere, the night shift detective, Vince Gotelli, tells Simone and Sipowicz about a heart medical condition of his.

Five Ecuadorians are found murdered at a small nightclub in an apparent robbery gone bad. Sipowicz, Simone, and Martinez work on the case where a tip from a waiter at the club leads them to try to find the two killers responsible. Meanwhile, Simone begins his undercover work for the FBI when he secretly meets with Joey Salvo who wants Simone to run a license plate number for him. Also, Russell and Medavoy are looking into a suspect in a spouse abuse case where Medavoy's commitment to Abby and Kathy hampers the investigation due to Medavoy's emotional attitude. Also, Medavoy discovers that Detective Gotelli is stealing money out of his locker in the light of his medical condition.

An inebriated Vince Gotelli is arrested after "hijacking" a city bus and having it wrecked. Fancy meets with the bus driver's boss to work out an arrangement about their investigation and suggests that Gotelli take some medical treatment. But it takes a forced intervention by Martinez, Medavoy, and Russell to convince Gotelli to get medical and psychiatric help in which Gotelli decides to throw in his badge for good. Meanwhile, Simone's continuing help with the FBI makes his life miserable when the men from Internal Affairs investigate him for the government license plate number on Salvo's car that he ran and is frustrated when he cannot tell them, not even Sipowicz, about what he's doing. Elsewhere, Sipowicz and Simone investigate the beating and murder of a woman in her apartment and deal with the emotionally sensate superintendent of the building whom they think he knows more than he's telling them.

Simone's continued involvement with the FBI sting against Joey Salvo jeopardizes his career when the men from Internal Affairs investigate him and suspend him from active duty. Meanwhile, Sipowicz and Russell investigate the gruesome murder of a young woman where a psychiatrist, named Dr. Wentzel, insists on implicating his patient's father for her murder. Martinez and Medavoy have a hard time over a haughty mugging victim who is a writer from a local magazine that wrote a bad story on the cops of New York City. Simone's involvement with the FBI reaches a cliff-hanging climax when in a secret meeting with Salvo, the mobster is hit by gunfire by an unseen assassin. Sipowitz, following Simone, comes on the scene and sees Simone standing over Salvo's dead body... and thinks Simone killed him!

In the four months since Joey Salvo's assassination, Simone is working odd jobs since he has been suspended by Internal Affairs pending their investigation, while he approaches Sipowicz asking about his and others incitements by the FBI who think that Salvo's death was an inside job within IAB, and Lt. Shannon from IAB tells Lt. Fancy that he may know the person who killed Salvo. Meanwhile, Gina discovers herself to be pregnant, but is hesitant on telling Martinez.

Simone returns to work at the 15th Precinct and immediately helps Sipowicz with his case of the shooting death that occurred during a robbery at a local bar. Meanwhile, Martinez and Medavoy stake out a hotel where a serial rapist has been committing his crimes. Gina finally accepts James' proposal and wants a quick wedding.

Medavoy launches his own investigation when Abby, and her girlfriend Kathy, are both shot by an intruder in their apartment in which Kathy dies and a grief-stricken Abby cannot bring herself to answer Medavoy's questions about her past and her former lover who may have been the assailant. Meanwhile, Simone, Sipowicz and Russell investigate a suspect after the charred body of a young woman is found in an abandoned vehicle. Also, Gina develops complications with her pregnancy and is taken off work for a few weeks.

Simone and Sipowicz investigate the murder of a man where the only witness is an insane woman, who lands in danger after she is kidnapped by their suspect's lawyer. Meanwhile, Medavoy and Martinez investigate a string of taxicab robberies which leads them to the brother of a gypsy cab driver. A new administrative aide, named Naomi Reynolds, arrives to substitute for Gina's absence.

Simone and Kirkendall work on a murder case where a son is bitter about his father's death and offers $5,000 to anyone who can produce the killer, and the result is a greedy horde of people with many false leads. Meanwhile, Sipowicz and Russell investigate the rape of a nine-year-old girl, whose mother thinks the culprit may be a retarded boy from their apartment building.

Simone and Sipowicz investigate a break-in of a high-rise apartment where the wife and baby are killed and the husband injured. Vince Gotelli, now an insurance adjuster, tells Simone and Sipowicz that the man may have faked a break-in to kill his family to collect an insurance policy. Meanwhile, Fancy gets some clues about a 15-year-old unsolved murder case from a visiting old friend who is dying. Also, Russell, Martinez, and Medavoy investigate the murder of a record company executive who wasn't very popular among his co-workers.

Simone and Sipowicz investigate the murder of two roommates. Meanwhile, Medavoy investigates a story from an old friend about a man wanting to hire a hit man for a job, and he recruits Martinez for the part of playing the hit man so they can catch the crime in the act. Kirkendall and Russell investigate the claim of a wealthy woman that her maid did not accidentally donate the diamond that the woman kept in a safe place disguised as a soup can.

Simone and Sipowicz investigate the disappearance of a young boy, who turns up dead and the father points that a mute homeless man, named Israel, may have been the one. But Supowicz suspects that the father may be the real culprit. Meanwhile, the rest of the squad investigate the murder of a Hasidic Jewish girl and have to juggle the need for their investigation against the needs for a quick burial.

After Israel hangs himself, Sipowicz investigates a clue which is a bible verse that Israel pointed out to him, which leads Sipowicz and Simone to set up a complex sting operation to find out if the father of the murdered boy really was the one that set the whole Israel frame-up. Meanwhile, Medavoy and Martinez look into a doctor who is helping out the homeless by getting them a job with insurance benefits that he helps collect.

Sipowicz is visited by an old school friend who asks him to help talk to his daughter about the company she is keeping, which takes a turn when the woman's roommate turns up murdered and Sipowicz thinks that another one of his old high school friends was involved. Meanwhile, Medavoy and Martinez look into a case where a man is getting a lot of teeth that contain gold fillings and they uncover a small grave robbing operation. Simone overhears Naomi talking with a different accent, and she tells him that she is actually from Australia and about her desire to become a policewoman.

Simone, Sipowicz, and Russell investigate a shooting of two women and later go into a raid on a drug dealer's apartment in which Russell risks her life to capture the dealer/murderer, but later Russell tells Simone that she happens to be pregnant. Meanwhile, Martinez and Medavoy look into the murder of a prostitute, despite Martinez's complaints about a back problem that later gets him taken out of the squad. Also, Naomi tells Simone about her problems with her landlord who has reported her to the INS.

Simone and Sipowicz investigate a crime where a man discovers a woman's body stuffed inside a large box. While on the case, they meet the victim's brother, a strange man who is more concerned with drinking a particular brand of soft drink. Meanwhile, Russell investigates the death of a child whose parents do not seem fit to raise a child. Also, Kirkendall and Medavoy look into the death of a young boy whose very religious parents suggest that the person who killed their son can be forgiven.

Simone and Russell investigate two stickups held at ATM's where they get a line on a possible suspect and then use Kirkendall to appeal to the suspect's mother to help them reach out to him. Meanwhile, Medavoy attempts to sort out a case where he can't determine if there really is a twin when a man comes to the station to report that his twin brother, Pete, has threatened violence against his former girlfriend. Also, Sipowicz contends with a medical problem involving his prostate while helping Simone and Russell and he is less than forthcoming with what his doctor has told him about his condition. Also, a new administrative aide, named Delores Mayo, comes to work at the 15th Precient as Naomi's replacement.

Simone and Sipowicz try to conduct their investigation in the midst of racial turmoil in the station and the neighborhood when a young white teenager is murdered in a black neighborhood during a drugs-for-guns deal that went bad, and the victim's racist father comes to the station and begins quarreling with Lt. Fancy over his race and roll in the investigation. Meanwhile, Medavoy and Kirkendall investigate the strangulation and dismemberment of the mother of a young boy, who's discovered his mother's body in the refrigerator. Also, Russell decides to take some time off since she's feeling ill due to pregnancy morning sickness, only to suffer a miscarriage at the end.

Simone and Sipowicz investigate the murder of a nurse where the suspects include a struggling actor, a crazy man, and eventually a uniformed officer from the precinct named Tommy Richardson. Meanwhile, Medavoy and Kirkendall look into the death of a bicycle messenger who was killed for just trying to help a man whose backpack was stolen, so they determine that the backpack contained drugs. When they get a suspect into custody, Kirkendall figures out a clever way to get an ID on the suspect who won't cooperate. Also, Sipowicz's doctor tries to talk to him about how to deal with his medical problem, but Sipowicz won't listen.

Richardson confronts Sipowicz and Simone about their impending questioning of his wife over the murder of the nurse, but with the exception that Richardson is a real bad person, Sipowicz and Simone reach nothing. In a cross-over from the series "Upstairs", former temp and private detective John Irvin stops by the station to tell the detectives about the new graphics art business he started. But with the exception of the receptionist Dolores, no one is around, including Medavoy who leaves in a hurry for upstate New York where Abby now lives to be by her side when she goes into labor. Meanwhile, Kirkendall and Russell look into the theft of a graduate film student's camera, where only the student seems more interested in dispensing his own justice. Also, Sylvia finally learns about Sipowicz's medical condition from his doctor and finally persuades him to go for further tests and possible surgery.

Simone and Sipowicz look into the shooting of two women (one of whom was killed) who were raped by a group of men in an apartment owned by a former crack dealer, named Jamal, who was crippled in a previous shooting incident. Sipowicz confides in Simone about his medical condition when Simone sees Sipowicz's doctor pull him aside and talk to him confidentially. Meanwhile, Kirkendall, Russell and Medavoy investigate a shooting at a clinic. When they get a woman suspect into custody, a security guard from the clinic who was her secret admirer comes to the precinct demanding she get a second chance.

The detectives get a break in a case involving a police officer suspected of committing murder.

As Sipowicz prepares for prostate surgery with Sylvia by his side, James Martinez returns after recovering from his back problem where he reports that Gina had her baby three weeks earlier. But Medavoy is even happier after returning from upstate New York with a videotape of Abby giving birth to her baby and is very eager to show the tape to anyone who will watch. Meanwhile, the rest of the squad gets involved in a case of five reuniting Army buddies when one of them is found dead. The four others try to keep their fabricated story straight as Simone and the others try to figure out their involvement.

Sipowicz returns to work after his successful prostate surgery, but apparently too soon, for he has an accident while interrogating a suspect. He is given desk duty to help Simone and Russell investigate the murder of a woman's boyfriend by her ex-husband, the ex-husband later revealed to be searching for his daughter who's gone missing while in the ex-wife's care. Meanwhile, Simone is called upon by Detective Nick Savino to help investigate a missing persons report that is being filed by the nephew of one of Simone's apartment tenants. Based upon past exchanges between the missing woman and Henry Coffield, another building tenant, Coffield becomes a suspect. Former administrative aide Naomi Reynolds shows up at the station, now wearing a private security uniform and speaking in her natural Australian accent, to visit Simone, hoping to tell him that her situation with the INS was resolved and she is now furthering her pursuit to one day become a NYC police officer.

A murdered couple is found where the dead man is a car salesman and the woman is a prostitute. Simone and Sipowicz look into the salesman's death, while Medavoy and the other detectives look into the prostitute's death, where the M.O. of the suspect is to buy used condoms from a prostitute and then mix the spent semen with his own to cover his crime. As Sipowicz recovers from his surgery, he finds that a recent blood test is not favorable and once again keeps his medical problem to himself.

Simone and Sipowicz work with Cohen to investigate the death of one of Cohen's witnesses and her son. Evidence points to the opposing attorney having some involvement with the arrangement of the homicide. Meanwhile, Russell and Kirkendall try to help a man locate his missing daughter. Medavoy and Martinez look into a corporation dealing with fake sports memorabilia, where Medavoy is taken in with the blond employees who reminds him of the departed Donna. Also, when Sipowicz thinks about his low sexual functions, his doctor prescribes the wonder drug Viagra. In the mist of all the cases, Simone and Russell decide to get married on their lunch break, but their cases get in the way of it all.

The detectives investigate the torture-murder of a hotel magnate's son. Russell and Kirkendall suspect that an attempted rape victim is hiding something. Simone's health begins to deteriorate.

The detectives of the 15th Precinct investigate a double homicide involving one of their own, an alcoholic cop who seems to have done the right thing, but can't remember key details about the incident.

The detectives question a group of unsavory suspects after a well-dressed man is found dead in a park. The squad tries to stay optimistic as Simone is told that he will require a heart transplant.

The detectives investigate a grisly murder in which an elderly woman's hands and feet were cut off. Simone's health continues to deteriorate.

Sipowicz helps his ex-wife deal with a drunk-driving violation. Simone's body rapidly succumbs to infection in the wake of his heart transplant.

Youthful detective Danny Sorenson joins the squad and, during a multiple homicide investigation, discovers that his new colleagues have yet to recover from Simone's death.

Sorenson and Sipowicz investigate the beating death of an elderly shop owner. Russell and Kirkendall encounter Dolores while investigating a homicide at a strip club.

The detectives search for the truth when a white off-duty police officer with a history of racism fires upon an African-American undercover cop. Dolores is arrested for shoplifting.

Kirkendall's son witnesses the murder of a convenience store clerk. Medavoy and Martinez investigate the death of a homeless man.

The detectives find themselves caught between the F.B.I. and Internal Affairs when an off- duty officer is killed during a robbery. Medavoy falls victim to Sipowicz's mischievous prank.

A gigolo is suspected of killing one of the tenants who lives in his apartment building. Sorenson's friend kidnaps a man who groped female passengers aboard a bus.

John Irvin fears the worst when Dolores disappears. The detectives search for a body when a mentally ill man confesses to raping and murdering his girlfriend's daughter. Two brothers run their own investigation when their sibling is murdered.

A shooter fires upon Fancy during a stakeout. Sipowicz fears that Dornan's demotion may be linked to the reopening of the Suarez case.

Sorenson and Sipowicz investigate the murder of a nine-year-old girl whose body was discovered inside a locked basement. Medavoy and Martinez assist an elderly man who believes that his young girlfriend was pressured into embezzling money from him.

Sorenson and Sipowicz investigate when a fellow officer shoots a drug dealer; Russell and Kirkendall intercede on Gotelli's behalf when a disgruntled man repeatedly vandalizes his mobster neighbor's car.

Medavoy has an option for a holiday in the Hamptons. Danny's girlfriend announces she is late. A suspect is wired for sound to catch his boss in a case of a body in a dumpster.

The team investigate a courier firm robbery where Mike Roberts works, which looks like an inside job. An old lady dies, her apartment is robbed, and her nasty sister makes an impression.

Mike Roberts is found dead. John reveals a connection between Roberts and Cullinan, who was with Dolores when she died. Mike left behind a memoir detailing some of his work. Jill goes undercover as a drug-addicted hooker.

Dornan causes problems at an AA meeting and Andy asks the Lieutenant to talk to him. Dolores' father accuses the squad of withholding information from him about his daughter's murder. Jill splits from Cohen.

ADA Costas prepares for the trial against Cullinan, and chooses Sorenson to testify over her husband. A man is shot dead in his apartment, and his wife's story about Latinos looking for drugs doesn't add up.

Tensions mount as the Cullinan trial approaches. Mike Shannon brings a problem to Sorenson. Danny kisses Diane. There's a shooting at the courthouse.

Andy and Theo struggle to live without Sylvia, and the squad worries about them. Cullinan is confronted with new information about Mike's death. John is released from hospital.

Danny and Andy catch an assault that looks like it was done by the boys in blue. Jill considers dating her ex-husband.

Jill's son has his first communion, where Andy and Danny spot a surveillance van across the street from the church. A baby is found dead in a dumpster.

Andy is finding Theo a challenge. A man is found dead in a hotel bath-tub, minus a part of his anatomy and some personal effects. A mother brings her son into the house because she thinks he's been stealing.

The squad attends a homicide with seven naked bodies. Jill's ex is arrested.

James passes his sergeant's exam. Jill's ex-husband could be causing problems for Jill.

It's James' last day with the squad before he moves on as a sergeant. Jill's ex is in the wind and causing more problems for Jill.

Medavoy gets a new partner. A cop is shot and killed. Diane seeks counsel from Andy about whether to tell Jill what she knows about her ex.

A woman is run over by a bus, she was already dead when she was tossed from a van. Two Russian boys go missing after their father says he left them with his sister.

A young boy is suspected of killing his mother's boyfriend; Fancy realizes that Lt. Abner is severely depressed. Sipowicz has a date with a niece of a friend as a favor; Katie becomes upset at this news.

Andy and Danny reopen an unsolved murder when the body of a small child is found buried within a wall; Medavoy and Jones deal with the owner of a dog who has a bullet in his nose they need as evidence in their case.

Fancy tries to rebuild his relationship with Abner; Andy and Danny investigate the murder of a club owner; Jones takes out his frustration on a man who is suspected of raping and beating a woman.

John Irvin, the department's PAA, helps Andy and Danny with a possible love triangle homicide. Jill and Diane help a mentally challenged woman find the gang who raped her.

Medavoy and Jones look for a woman reported missing by her "distraught" husband; Andy and Danny deal with a snotty, eccentric art owner whose collection has been stolen.

Andy and Danny investigate the robbery of an elderly couple; Medavoy and Jones deal with a wealthy woman with a grudge against her former maid; Danny's informant, J.B., seems headed for disaster.

Danny has an emotional crisis; John Irvin helps in a case involving stolen antique clothing; Jill deals with a young woman with small children who steals because of her unemployed, abusive husband.

Jones uses his charm to help Andy and Danny solve the murder of an elderly couple; Medavoy gets involved with an old friend who is having trouble with the Chinese mafia.

A dismembered body is found in a barrel; the trail leads Andy and Danny to a mobster who denies knowledge; they later learn he's connected to another murder, his wife who disappeared years earlier.

A young woman tries to convince Jill and Diane that her twin sister has become a victim of foul play. Andy and Danny investigate an immigrant's missing, wealthy and unpopular wife.

The detectives accept the help of a pair of British police officers to catch a rapist-murderer who has emigrated from England to NY. Meanwhile, Jones becomes close with a reporter he met during a previous case.

Diane once again finds herself embroiled with Harry Denby who has information about Jill's ex-husband. The squad investigates a home repair scam.

Andy goes into a tailspin when a doctor's visit reveals that Theo may have cancer. Diane and Jill's relationship suffers when info about Jill's ex-husband surfaces. Andy and Danny ponder the impact on Jill's career.

IAB is closing in on Jill. Jill explains the leverage Don has over her. Andy stays by Theo's side as he undergoes tests to determine if he has cancer. Changes are made in the department as fallout over Jill's ex-husband.

The detectives investigate a multiple homicide at a fast food restaurant; an addict gives his 5 & a half year-old daughter to a drug dealer as collateral on an overdue loan; Internal Affairs reopens the Kirkendall case.

Danny wakes up in Diane's bed. Andy and Katie get Theo's test results. A former colleague of Bobby's reaches out to Diane from prison. The team investigate a series of cab-driver shootings.

A female officer is shot following a stationery store robbery and later dies in hospital. Danny tries to keep Diane safe. A new ADA arrives. Katie decides to move back home.

Fancy is being sent on a training course ahead of the squad getting computers. A woman is attacked by a court jester in a hotel room, then a body is found in another room - are they connected? Diane questions her involvement with Danny.

Diane turns to a friend at the Survivor's Network for help. A body is pulled from the water. Two Chinese men are brought in handcuffed together. The new computers arrive.

A schoolgirl is found dead. Andy asks Eddie's niece on a date. John babysits Theo for the first time.

A homeless guy Danny was trying to protect turns up dead. The DOA's father is concerned about the trust fund his sister will now inherit.

Fancy bawls out Diane and Danny about being in a relationship. A man traveling on the subway is killed. Denby is implicated in the courier scam.

Danny could be in big trouble for roughing up a suspect. Detective Connie McDowell joins the team for the day.

Danny is restored to full duty. Off. Szymanski's cousin is knocked down in the street and killed. Capt. Bass's wife is injured during a robbery at her store. Greg plays matchmaker.

Andy witnesses a hold-up in the street and shoots at the get-away car. Det. McDowell is assigned to fill in at the squad again.

A man loses his penis. Fancy makes Captain and the incoming Lieutenant is a ball-breaker. Andy is having second thoughts about Cynthia. A mob hit-man sings like a canary and implicates a celebrated Customs officer.

A man caught carrying a cash register takes Andy and Danny to a body. Fancy is packing up to leave. His replacement alienates the squad before he's even left.

Rodriguez mediates when Sipowicz and Sorenson clash with detectives from another squad anxious to solve a multiple murder case; Medavoy and Jones try their hand at making extra cash by cleaning up murder scenes.

Sipowicz and Sorenson investigate a case involving an off-duty police officer who was shot in the company of a prostitute; Medavoy and Jones aid a hapless bodega owner by concocting a story to keep him out of jail.

Jones and Medavoy investigate the murder of a Chinese restaurant owner. An IRS lawyer claims to have been kidnapped and released, but Sipowicz and Sorenson doubt his story.

Sipowicz and Sorenson try to get one scared witness to identify a murder suspect, while Russell and McDowell guard another witness who's due to testify in a murder trial.

Sipowicz and Sorenson investigate the murder of an exotic dancer; Sipowicz and Medavoy act as elderly decoys to catch some street thieves attacking old people outside a local bank.

A meek and mousy young woman is found beaten to death on the floor of her apartment. Her brother-in-law is very upset but not about her death--he was paying her money to use her apartment for an extramarital affair.

The detectives investigate a strangulation murder that may be tied to one of Diane Russell's cases; Russell consults a doctor when she discovers a lump in her breast; Medavoy and Jones investigate an arson linked to two boys.

Sipowicz, Russell, and Clark attempt to connect the murder of a young woman to two other killings; Medavoy and Jones investigate the shooting death of a mother whose children feared her.

A woman survives the serial killer's attack, and her account prompts the detectives to focus on Carlin, his partner, and a bodyguard; Medavoy and Jones investigate when an off-duty officer kills a man; and McDowell comforts Russell during a biopsy.

When another woman is murdered by the serial killer, the detectives arrest a suspect... and discover the killer's identity; and expecting a baby, Sipowicz and McDowell decide to get married.

Fancy is being sent on a training course ahead of the squad getting computers. A woman is attacked by a court jester in a hotel room, then a body is found in another room - are they connected? Diane questions her involvement with Danny.

Danny is restored to full duty. Off. Szymanski's cousin is knocked down in the street and killed. Capt. Bass's wife is injured during a robbery at her store. Greg plays matchmaker.

Simone and Sipowicz investigate a murder, but the procedures they must follow make them unpopular at the precinct when a fellow cop might have been involved. Meanwhile, Medavoy and Kirkendall investigate the murder of a young girl where the only clue is a videotape that starred her crushing worms. Russell goes missing and eventually turns up in Simone's apartment where she recalls to him that her father molested her as a child.

A meek and mousy young woman is found beaten to death on the floor of her apartment. Her brother-in-law is very upset but not about her death--he was paying her money to use her apartment for an extramarital affair.

Russell worries about her mother's pending grand jury trial for the intentional murder of her father. Meanwhile, Sipowicz and Simone search for the killer of a mobster's son, that reveals a family affair. The pompous lawyer of a suspect in another murder case impedes Medavoy and Russell's investigation and the erratic behavior of son of the victim doesn't help much either. Also, Martinez and Lesniak investigate another murder case that may be connected to Sipowicz and Simone's murder suspect who now may be on a killing rampage.

Sipowicz and Sorenson investigate the murder of an exotic dancer; Sipowicz and Medavoy act as elderly decoys to catch some street thieves attacking old people outside a local bank.

Sipowicz and Sorenson try to get one scared witness to identify a murder suspect, while Russell and McDowell guard another witness who's due to testify in a murder trial.

Diane once again finds herself embroiled with Harry Denby who has information about Jill's ex-husband. The squad investigates a home repair scam.

An Indian woman is found dead in a car and Sipowicz is full of theories about who killed her and why. While Donna is away at a computer camp taking courses for the week, her temp is a feisty middle-aged woman, named Evelyn, who has bad attitude and who clashes with Sipowicz and others in the squad as well. Meanwhile, Martinez and Medavoy are nearby when a drug crazed man, named Marv, tries to rob a couple of stores of credit card slips. Russell and Lesniak work on another case involving a man who was left to die of a drug overdose that leads to a chance of mending the feud between them.

Fancy bawls out Diane and Danny about being in a relationship. A man traveling on the subway is killed. Denby is implicated in the courier scam.