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.

When a legless body is found in the New Mexico desert and a second unwilling amputee shows up at the hospital, the BAU team searches for this amateur surgeon before he preys upon his next reluctant victim. Also, Reid's phone calls to a mystery woman have the team intrigued.

The BAU heads to Austin to investigate victims found there with their watches set inaccurately, a clue which may connect the crimes. Meanwhile, the UnSub stalking the BAU inches closer in his pursuit of the team.

As the BAU zeroes in on the suspect of the ritualistic killings they've been investigating in Arizona, a bizarre connection within the unsub's family could lead them to finally nab the suspect.

When JJ is kidnapped, the BAU delves into her time at the State Department to find clues to her disappearance and uncover a secret mission that now puts her life in danger. To help with their search for JJ, the team calls upon Prentiss to help in the crisis

Victims of arsenic poisoning are found in Long Beach. The investigation reveals that the killer has a fascination with Greek mythology, based on handwritten death threats to the deceased and other mysterious clues. Meanwhile, Hotch becomes concerned about participating in Jack's third-grade career day.

The investigation into a series of mysterious deaths in Atlanta reveals the murders were likely committed by an UnSub with an obsessive skin disorder.

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.

When three restaurant workers are killed in a robbery/homicide in Las Vegas, N.M., the BAU looks at a cold case that happened in the town six years ago for leads.

When JJ arrives home shaken after a rough case, she breaks down and tells her husband about the abduction of two children.