Walker and Trivette receive a message from terrorists, who threaten to blow up enough anthrax to kill one million people in Dallas, if they don't receive $100,000,000 and the release of another terrorist from prison. It's a race against time as Walker and Trivette hunt for the bomb.

When a man, Lloyd Allen, who is willing to testify against his boss, Vince Termin, who is a dangerous man who killed another man who was going to testify against him. Walker sends Francis Gage and Sydney Cooke to get him but when they arrive Termin's men are there but they manage to get away. Walker and Trivette try to help them.

A Shaman transports Walker back in time 100 years to prove the innocence of a Comanche Indian. In the present, Walker must prove the innocence of another Comanche, who is accused of murder.

Gage's sister is a reporter. She goes undercover to investigate a crime boss operating at a local bar. When she goes missing, Gage and Sydney go undercover to find her. Meanwhile, Walker and Alex go on a camping trip.

Loretta Lynn's daughters play themselves as a country singing group. The Lynn Sisters are kidnapped and forced to record their music for a bootleg music mongrel.

An undercover cop is killed by the crime boss he was investigating. The deaf daughter of an Elvis impersonator saw the murder and is now in danger from the killer.

The HOPE Center hosts a charity rodeo to raise money. During practice, a man sexually harasses a woman; Trivette rescues her, but the man is accidentally killed by his own hand. The dead man's father decides that Trivette must die.

Walker goes undercover in a Arkansas prison to expose a warden money making fights.

When Walker visits a school for his Kick Drugs program, he witnesses a young boy's suicide. He learns that the boy's death was because of harassment he was getting from some students who are members of a gang. Walker then decides to spend some time at the school to look into it. Gage and Cooke are trying to get a criminal.

An employee at a research facility realizes his company is making sarin nerve gas and plans to release it. The man asks his brother Danny to help collect evidence for the police. They are caught; the man is killed and Danny hit by a car.

Men dressed as Santa's rob the armored trucks picking up donations from Santa bell ringers. Gang members rob a church where former gang members attend, causing the church goers to get in contact with their gang again.

A criminal whose operations Walker and the others have been foiling decides to take them out, so has one of his men plant a bomb when they're all together. Walker sees him and discovers the bomb and tries to get rid of it but it blows up in his face. At the hospital they learn that Walker's blind and the doctors are uncertain if it's permanent. Gage and Cooke try to get the man who did this. Alex tries to help Walker cope but he's impossible. White Eagle shows up and tells Walker that he shouldn't worry if he can see again but to learn how rely on his other senses. And he does.

When a new weapon knows as a Thunderhawk is stolen, Walker tries to find it. What they don't know is that the man who was in charge of bringing it to the military was the one who stole it. He's planning to sell it to some people who plan to use it for terrorism. But before he could it's stolen from him.

Trivette is giving a criminology lecture at the University. Afterwards, one of the students asks Trivette to help her prove that her father is innocent of a crime he was convicted of.

Walker returns from Los Angeles with Eagleton, the paramilitary man who killed a Texas Ranger and who was planning something in Los Angeles Walker turns him over to some other men and it's while in transit that some men kill the men escorting Eagleton and spring him. Walker tries to find him, knowing that he is planning something. Sammo Law, the Chinese cop in Los Angeles who helped Walker catch Eagleton, comes and has some information he got from Eagleton's associates.

A Chinese diplomat who is a friend of Walker's is in the country to bring some students to his country. Later when one of Chinese Embassy staff turns up dead Walker and the others investigate. Gage has a run in with the diplomat's son and because his father is a diplomat has diplomatic immunity. Gage is not pleased and thinks they should keep an eye on him. They later learn that the staff member may have been involved with drug smuggling. And that the diplomat's son is the one behind but because of his diplomatic immunity they can't touch him.

Dallas prepares for a ceremony to promote unity among the races. A white supremacist group goes to Dallas with the intent of placing bombs to destroy the unity. Gage takes a young boy under his wing to keep him from joining a gang.

When Detective Steven Nimh who infiltrated the organization of Billy Lo and has given Walker very useful information about Lo's operations. Walker feeling that Lo might be suspecting that he has a mole in his organization wants Nimh to pull out. But Nimh sensing that something big is going down decides to stay in. But Lo sets him up and is killed. So Walker with what info Nimh gave them tries to get Lo. At the same time Nimh's father who's a friend of Walker's comes and tries to help his grandson deal with his loss and some other problems.

Walker has been able to intercept all the drug shipments of the Ortega brothers. But when they discover that Walker has an informant in their midsts they kill the informant. In the meantime, they still continue to bring drugs in by having people sneak across the border by going throw a ranch owned by Alex's friends. But when the husband catches them, he calls his foreman for help but he kills the man, apparently he works for the Ortegas. Upon learning of what happened the Ortegas make plans to buy the ranch.

Ortega abducts Alex, Cooke and some other people and demands the release oh his brother. Walker knows the man won't keep his word but a Fed allows the exchange but as Walker predicted Ortega doesn't release Alex and Cooke. Walker then goes across the border to get them and Trivette and Gage go with him.

Walker,Trivette,and Gage go to walker's bachelor party in the woods when Gage is attacked by a bear

As the wedding of Walker and Alex takes place killer is hired to kill them

Just as Walker and Alex are about to go on their honeymoon, the assassin who was hired to kill Alex and whose partner Walker killed, sets out to get them. And he's determined to do it. Even if he has to bring down the plane they're on.

The Rangers stop a baby kidnapping ring that sells the infants to parents desperate for a baby. Also, a property owner wants his tenants out of the apartment building, so he plants a bomb with the people inside.

Walker, Trivette, Alex, Gage and Cooke go to another city to play baseball with the city's police department. Alex meets with the D.A. who is a friend to talk about a major drug bust they made. Later two cops are waiting for someone when three detectives come in and try to kill them. One of them is killed, the other gets away. He makes his way to the courthouse and the detectives chase him, he runs into the D.A.'s office and they shoot the D.A. Walker shows up and tells them to get out. He then talks to the cop who claims that he has proof that the three detectives are stealing drugs from their busts. Walker finds it hard to believe and sends Gage and Cooke to look into it and learn it might be true. Walker thinks that one of the city's high ranking cops might be working with the detectives.

A new drug called the White Buffalo hits the streets and Alex, Sydney and a young child find the drug dealers while they are hiking. Sydney is shot by the drug dealers. Walker investigates a buffalo statue that appears to be crying tears.

A wrestling friend of Trevette's is killed during his flying entrance to the ring. The Rangers search for the businessman who wants to put the wrestling company out of business.

A man who calls himself The Chairman talks with various mob bosses and informs them that he knows who among their people are undercover operatives sent by the government. He offers to weed them out for a fee. But one man, named Cardoza who is based in Texas refuses but when the Chairman tells him that a Senator is in Dallas to meet with Alex on how to deal with him, he claims that it doesn't bother him. But, he actually decides to take her out. The Chairman then informs the Rangers who stop Cardoza's men. Later when the Senator is informed of undercover agents turning up dead, she decides to form a task force to find who is doing it and she wants Walker to head it. Walker accepts and he brings in, Trivette, Gage and Cooke to help him and he is told that a New York cop named Rosetti is part of his team. Thinking that whoever is doing this must be hacking the Government's computers, Trivette gets a hacker who is in jail to help them. They start by going after Cardoza.

Walker and his team are still searching for the man who is eliminating undercover agents. He gets a lead when the son of a mobster goes to people who pay his father for protection asking for more. When one of them decides to go to his father and tell him what he id doing, he kills him. Someone sees it and tells Walker. Walker then sets out to get the mobster's son. The mobster then goes to the Chairman to deal with this.

Walker sets out to go after the Chairman. He decides to go after his clients. He decides to start with a man Rosetti knows who is now in Miami. He sends Rosetti, Trivette, Gage and Cooke. They eventually find the man's accountant. They convince him to testify against his boss. Gage and Cooke are bringing him back to Dallas. But when the his boss learns of this, he informs the Chairman who then makes sure he doesn't reach Dallas.

The explosive conclusion of the Rangers' on-going search for the elusive and resourceful Chairman.

A man joins burglars to make money to feed his family. When things go wrong, he is killed. His wife and baby escape, but she has to abandon her baby with Alex. Alex cares for the baby while the case is solved. Alex learns she is pregnant.

The granddaughter of someone Alex and Walker knows is in need of a liver transplant. When a donor is found, the organ is on it's way via ambulance. But some men who pulled a robbery run into the ambulance literally. When their vehicle is damaged they take the ambulance along with the organ. So Walker tries to find it.

Walker takes in a young boxing prodigy after the boy's parents are killed in a car accident. Meanwhile, Rangers Sydney and Gage go undercover to take down a drug ring.

A bus transporting female convicts is forced off the road and the ones who force it off the road are the partners of two of the convicts on the bus. They proceed to go on a crime spree. The other two are chained together and escape together. One of them claims to be innocent of the crime she was convicted of and tries to find her son. Her husband tries to find her so he can kill her. They eventually run into Gage who is on a bike ride.

Boomer Knight runs a youth center in a gang neighborhood to keep the children from joining the gangs. Walker helps him organize basketball tournaments. The drug dealers try to intervene by kidnapping Boomer.

Walker and the others are working on reports that the mob is making a move on Dallas and they are forcing criminals to turn their operations to them or else. At the same time his friend who owns a club, borrowed money from someone who works for the mob. And after he pays them, they insist that he give them ownership of the club. When the mob boss arrives, he tries to kill him but Walker stops him and they agree to work together to get them.

After a lawyer who is representing a man who was beaten when he was arrested is shot. Walker and his team must find out who shot him.

The daughter of a Dallas billionaire is kidnapped by her bodyguard and held for ransom on a nationally televised website. Walker and the rangers have only six hours to save her before she dies.

Gage and Sydney go undercover at a medieval theme restaurant to gather evidence that some workers are stealing art from museums overnight. Gage is identified by a waitress and his life is in jeopardy.

After a trial where a crime boss is found guilty, the head juror is killed. The Rangers connect the murder to the son of the convicted criminal. Others are in danger from the son's revenge for putting his father in prison.

Sydney and Gage go undercover to bust a biker gang that has been dealing drugs to illegally-licensed truck drivers; one of which caused a fatal highway accident that first alerts Walker and company to the operation.

While trying to prevent a crime, Gage is near an explosion. The intensity of the blast, damages his hearing. While they wait to see if his hearing returns, Walker and the others try to find the ones Gage tangled with. And they are also planning to take Gage out too.

The end is near ... in a show told mostly in flashbacks, a wounded Walker ascends through a manufacturing plant, wounded and using his gun one bullet at a time on killers as he recounts the story of a visiting African businessman who collapses from an Ebola-like virus after infecting several people. The businessman, who has since died of the virus, was a pawn in an African diamond-smuggling ring. Now Walker has the diamonds and a whole cartel is in the building going after him. A "Dallas"-like twist ending keeps Walker going (this show and the one after it were doubled up on the same Saturday night after being postponed due to extremely low ratings).

A show played largely for laughs (and with Walker not involved in the story; he has a few scenes checking in with Alex's obstetrician to try to find the sex of their upcoming baby): Trivette leads a group of Rangers backstage at Las Colinas Studios (and the actors' trailers for this show) to investigate skulduggery on a movie being filmed in Dallas.

Killer Lavocat breaks his gang members out of prison to help kill the Rangers he determines a threat to his life. Lavocat caused the death of CD, Jenson, and attempted to kill Trivette. A Hayes Cooper story parallels the modern day story.

Lavocat continues with plans to kill the Rangers. As the Hayes Cooper story unfolds, Hayes fights an ancestor of Lavocat. In current day, the Rangers go after Lavocat. Trivette and Erika are engaged for marriage. Alex gives birth to a girl.

Gage's sister is a reporter. She goes undercover to investigate a crime boss operating at a local bar. When she goes missing, Gage and Sydney go undercover to find her. Meanwhile, Walker and Alex go on a camping trip.

While trying to prevent a crime, Gage is near an explosion. The intensity of the blast, damages his hearing. While they wait to see if his hearing returns, Walker and the others try to find the ones Gage tangled with. And they are also planning to take Gage out too.

Walker,Trivette,and Gage go to walker's bachelor party in the woods when Gage is attacked by a bear

Walker and Trivette receive a message from terrorists, who threaten to blow up enough anthrax to kill one million people in Dallas, if they don't receive $100,000,000 and the release of another terrorist from prison. It's a race against time as Walker and Trivette hunt for the bomb.

A Chinese diplomat who is a friend of Walker's is in the country to bring some students to his country. Later when one of Chinese Embassy staff turns up dead Walker and the others investigate. Gage has a run in with the diplomat's son and because his father is a diplomat has diplomatic immunity. Gage is not pleased and thinks they should keep an eye on him. They later learn that the staff member may have been involved with drug smuggling. And that the diplomat's son is the one behind but because of his diplomatic immunity they can't touch him.

An undercover cop is killed by the crime boss he was investigating. The deaf daughter of an Elvis impersonator saw the murder and is now in danger from the killer.

Men dressed as Santa's rob the armored trucks picking up donations from Santa bell ringers. Gang members rob a church where former gang members attend, causing the church goers to get in contact with their gang again.

Gage and Sydney go undercover at a medieval theme restaurant to gather evidence that some workers are stealing art from museums overnight. Gage is identified by a waitress and his life is in jeopardy.

A Shaman transports Walker back in time 100 years to prove the innocence of a Comanche Indian. In the present, Walker must prove the innocence of another Comanche, who is accused of murder.

Walker goes undercover in a Arkansas prison to expose a warden money making fights.