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.