The BAU team investigates a string of brutal bludgeonings in Philadelphia and is led to the city’s boxing scene in search of a killer with strong blood lust.

The BAU team looks into the real reasons behind an apparent mass suicide of a small group of youths at a military academy. Also, Hotch and Morgan butt heads when a team member could be in jeopardy.

It’s personal for Garcia when the BAU investigate the disappearance of a woman in her survivors’ support group whose daughter went missing seven years earlier.

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.

The BAU search California’s Angeles National Forest after a number of bodies mysteriously turn up in the mountain lakes there. Also, Rossi struggles with an agonizing decision regarding his ex-wife. Isabella Hoffmann returns as Rossi’s ex-wife, Carolyn. Zach Filkins from the hit music group OneRepublic guest stars as a forest ranger.

Survivors of a Boise high school massacre return to remember the event 10 years later, but the BAU team is called in when a new killer with a similar style targets the survivors. Also, Hotch is worried that his son, Jack, may be a victim of school bullying.

The BAU team investigates a mass murder at an Internet security company in Charlottesville, Va., but clues reveal it is not a typical serial killer at work. Also, Prentiss must complete recertification training under Morgan’s watchful eye.

The BAU team searches rural Oklahoma when women are being found murdered after being robbed of one of their five senses. Also, JJ and Prentiss get the cold shoulder from Reid as he deals with their deception about Prentiss’ presumed death.

As the BAU searches for a suspected human trafficking ring when the bodies of two missing persons are found in the trunk of a car, Unit Chief Aaron Hotchner intimates there could be changes within the team due to budget cuts as Jennifer “JJ” Jareau returns to the FBI. The team is also assisted by [...]

The BAU is called to search for a man who is targeting children when the remains of an eight-year-old boy are found on the Appalachian Trail.