The BAU team investigate a list of murders in Bakersfield, California. The victims have been left unidentifiable by their murderer(s). Elsewhere the team welcome new agent Kate Callahan into the BAU family.
Following a series of abductions and murders in Seattle, the BAU look for an UnSub who was abused in the past and is after revenge.
A passenger jet crashes in Colorado, leaving the BAU team to build a profile around the suspicious events. Kate is reminded of a family tragedy.
After a body is found in Atlanta covered in scratches, the BAU learn that this death and other subsequent murders could all be linked to an UnSub with an obsessive skin disorder.
After a young boy who went missing in San Diego on Halloween reappears a year later, the BAU are called out into action after another trick-or-treater disappears in similar circumstances.
Songs: TAPS -- What have I done
It is a difficult time for the team when finding a common denominator among several victims in Montana. After the death of her sister, J.J. is struggling with her feelings.
After victims with massive social media followings are discovered dead in Maryland, the BAU looks for an UnSub taking on the persona of an Internet urban legend.
After a prominent attorney vanishes in Boston, the BAU discover secrets from his past which could give a clue to his sudden disappearance.
The BAU follow a conflicted killer in the state of Virginia who feels remorseful having committing crimes.
The BAU are in Salt Lake City to investigate a triple homicide.
After some frozen bodies are discovered in Nevada, the team think that the victims were members of a cult.
The team looks for a killer who calls the authorities before committing the crimes he is about to carry out.
The BAU goes back to its origins as they look at one of Rossi and Gideon’s old cases to try and locate a killer that managed to get away.
When an Indianapolis coffee shop is blown up and a hero emerges from the wreckage, the BAU tries to protect that person and his family while searching for the UnSub before more incidents occur.
Victims in California have the BAU searching for an UnSub who may have witnessed abuse as a child. Meanwhile, Kate shows parental concern when her niece, Meg, makes a date with a friend to meet a boy they met online.
When two guards at a privatized maximum security prison in Texas are murdered, the BAU suspects that more than one UnSub within the prison could be at work.
The BAU is called to Wisconsin in search of a serial killer, and the team looks for a connection among the victims for clues to the UnSub. Also, Kate has trouble dealing with her niece, Meg, when she begins acting out.
When the wife of an up-and-coming congressman disappears, the BAU investigates his political enemies as possible suspects.
When a family of four is abducted while on vacation in Barbados, the BAU is called to assist Unit Chief Jack Garrett and his International Unit on their investigation. Garrett and his unit, the FBI's top division for handling cases involving Americans abroad, work jointly with Hotch and his team when they discover that this case matches one the BAU investigated last year in Florida.