The BAU travels to New Orleans' French Quarter where a Jack the Ripper type serial killer is on the loose.

The team travels to Miami in pursuit of a serial killer whose conflicted sexual identity fuels his crimes.

People who apparently have nothing in common are being shot randomly in New York City and the team must determine whether it is the work of a single shooter or a team.

Driven by his nightmares, Reid stays behind in Las Vegas to find his father in order to find out the truth about Riley Jenkins' murder.

The BAU team races to help Hotchner find The Reaper and save his family before it's too late.

While Agent Hotchner takes a leave of absence from the BAU, the team must regroup to solve a home invasion case.

When a series of tornadoes hits Kansas, the BAU is called in to investigate bodies of young boys that turn up in the aftermath of the storms. Also, work pressures cause tension on JJ's home front.

In this first part of a two-part season finale, the BAU encounters a gang of bank-robbing serial killers in the nation's capital. As the team tries to negotiate the situation unfolding inside a bank, one of the team is taken hostage.

In part two of the season finale, the BAU races to understand the ultimate goal and core dynamic of the remaining Face Cards and their design in keeping Will captive and alive.

The BAU travels to Los Angeles looking for an UnSub who is kidnapping nannies and the children they care for on the same day each year.

The BAU call Emily Prentiss for help to find JJ, who has been kidnapped. The truth about JJ and Cruz's past is revealed.

The team works to clear Hotch's name after he's arrested by the DOJ for conspiracy.

JJ tells her husband about the abduction of two children.

In the wake of a devastating attack, the BAU works with former International Response Team member Matthew Simmons to save one of their own from escaped serial killer Peter Lewis.

The BAU investigates a spooky local ghost story of the "Tall Man" and the clues it provides when two people go missing in the woods of East Allegheny's Dead Man's Conservatory, and a third mysteriously surfaces the following day with limited details as to what happened to her friends. To assist with the case, JJ reluctantly returns to her hometown, triggering emotional flashbacks to age 11 and her older sister's tragic death.

Wedding bells are ringing as Rossi prepares to marry Krystall. But first, the BAU team travels to Los Angeles to investigate a series of fatal shootings in broad daylight following car accidents.

JJ is in the hospital clinging to life having been seriously wounded in Everett Lynch and his daughter Grace Lynch's successful escape from custody. Besides Will, Reid is standing vigil at the hospital, he who is angry at himself for not realizing sooner that JJ was in trouble. If JJ doesn't make it, Reid will not only lose arguably his best friend, but he and she will not have been able to clear the air about the strain that has existed between the two of them since their previous case. Reid is also torn in two different directions emotionally as he is called by the facility where he recently moved his mother, they wanting him to come right away. With the Lynches, the team knows they they have disrupted Everett's plans - he a highly organized man - and thus Everett and Grace will be working on the fly. The team believes they have to find any connection that either Everett and/or Grace would have in the DC area for that support they need, including financial, to go off the grid. If Prentiss is able to speak to JJ about the shooting, they may get another piece to what is happening with Everett and Grace. Also working for them is the fact that they still have Roberta in custody, who, despite being a criminal in her own right, would probably want to protect Grace at all cost, perhaps even at Everett's expense.

Series Finale. Following an explosive face-to-face encounter with Everett Lynch, Dr. Reid suffers from a brain injury and, while experiencing hallucinations, is visited by ghosts from his past. Also, the BAU makes a shocking discovery about Lynch that affects Rossi personally, and the entire BAU team comes together to celebrate Rossi's retirement.

When a family annihilator abducts a teen girl, the BAU works the case on either side of the country to save her. But an unlikely connection to a mysterious kit leads to a bigger investigation and at the center of it is Penelope Garcia.

Team hunts an UnSub who severs spinal cords, and uncover a clue from their last case pointing to a serial killer network. To figure out how big this network is, Rossi must convince a reluctant Garcia to return to the BAU.

The BAU hunts for the next connection to the serial killer network when they pursue a home invasion team. Alvez and Garcia convince Tyler Green to submit to a cognitive interview to unlock his memories of Sicarius.

A surprising connection forces Dep. Dir. Bailey to ask the BAU to take a case involving young DC socialites bitten by a sadistic UnSub. When the case turns political, the BAU finds themselves in the crosshairs of a high-powered senator.

The aftermath of the explosion threatens to end the Sicarius case unless the BAU can justify a reason to keep it open. The hunt takes them to a death row inmate - but is he a killer or another one of Sicarius' victims?

With the fate of the Sicarius investigation hanging in the balance, the BAU takes a case in West Virginia, where an UnSub practices his own twisted form of Old Testament vengeance.

Voit's internal struggles with himself lead him to a desperate kidnapping. But Rossi's obsession brings the BAU closer to the truth than they've ever been.

Rossi will go to any lengths to prove that Elias Voit is Sicarius; Voit turns Rossi into his own worst enemy, putting his future at the BAU in jeopardy.

With Rossi in Voit's clutches, he grapples with the limits of his technical know-how and mental strength. As the BAU tightens their grip on Voit, he reveals just how far he's willing to take his deadly crusade.