Penelope must ask her fellow hacker ex-boyfriend to help her and the team solve a case in San Jose.
The team travels to Chicago to profile mass murderers believed to be missing teenagers. Elsewhere, Morgan is ambivalent once he realizes his girlfriend's job is as demanding as his own.
Strangulations in Boston sends the BAU to the city to identify a murderer who keeps trophies from his victims. Meanwhile, the team helps Rossi mourn the loss of his favorite bar.
The BAU are called to Utah to investigate ritualistic murders and Penelope plans a Day of the Dead party.
Hotch's stab injury makes him have visions of Hayley and Foyet; meanwhile the BAU looks for a missing teenager.
The anniversary of The Kennedy Assassination might be a motivator for an UnSub who is striking Dallas.
Still in Arizona, the BAU make a familiar connection that could lead them to their prime murder suspect.
The BAU goes to Arizona to catch a delusional UnSub who thinks that women are out to get him.
The lunar eclipse descends upon Scott and his friends as they fight to stop Jennifer and rescue their parents.
While Peter and Derek try to save Cora's life in the aftermath of the storm, Stiles works frantically on a plan to prevent his father and Scott's mother from becoming Darach's next victims. Ultimately, there's a difficult choice to be made that could endanger everyone's lives and change them forever.moreless
A storm is descending on Beacon Hills as the identity of the Darach is revealed setting up the final battle of witts and fists.
Allison becomes increasingly suspicious that her father is up to no good.
Gerard and Peter reminisce of the events that made Deucalion and Derek the men they are today. But both Scott and Stiles have reservations regarding the truthfullness of their versions fo the past.moreless
The Darach has targeted Healers for another set of sacrifices and Dr. Deaton is one of them. The Alpha Pack again threatens Derek and his Pack, this time with a more dire outcome.moreless
The cross country team has to stay overnight at a motel and weird things start happening.
The battle between Derek's pack and the Alpha pack brings about serious repercussions.
The virgin killings continue and the twins start to cause trouble at the school.
Derek, Scott, and Issac track down Boyd and Cora with the help of Chris Argent to try to capture them before they hurt anyone. Meanwhile, Lydia finds a dead body and Stiles starts to put together a theory once he finds out it's not the first.moreless
A friend of Stiles vanishes while Lydia and Allison discover a hint as to the location of Boyd and Erica.
Derek and Isaac search for Erica and Boyd, and a new wolf pack arrives in town with its own menacing Alpha.
When a number of ecstasy overdoses in Manhattan show a pattern, the team travels to the city for the profile. Hotchner is surprised, however, when the investigation reveals his long estranged brother is somehow involved.moreless
The Replicator reveals himself when he targets someone at the FBI, and the race is on to catch him before he can strike again.
The team must stay fluid with an unsub who changes his pattern with each strike made in Detroit. Elsewhere, Blake faces a big decision when her husband returns to her life with a major career plan for her.moreless
A kidnapper who annually targets nannies and the children they mind sends the team to Los Angeles to profile the unsub.
The murder of two men in Rapid City, South Dakota, means a trip to the Black Hills for the team. Their profile is confounded by the ritualistic manner of the kills, though, and difficulty narrowing down a trigger from different environmental causes in the area. Meanwhile, Reid presses on with his duties while still coping with Maeve's death.moreless
A Colorado town celebrates the quarter-century anniversary of its time capsule by opening it. The macabre contents, however, occasion a call to the BAU, rather than a pleasant trip down memory lane.
Middle-aged men are being targeted in Morgan's old neighborhood in Chicago. A lead makes Morgan believe the BAU is after someone associated with Carl Buford, the man who molested Derek as a child.moreless
People who detailed personal milestones and intimate details of their lives on social media sites and blogs end up dead, leaving the BAU a whole digital world to profile. Back in D.C., Garcia's attraction to someone new sparks Kevin's jealousy.moreless
The Replicator makes his first mistake, and the team moves quickly to Philadelphia—where the victims are—to take advantage of their stalker's lapse.