The BAU travels to Chicago to investigate a series of mass murders, after teenagers in a missing persons report become the main suspects.
Michael is asked for help by Trevor, a former getaway driver who's gone straight. However, Trevor is being pressured into working an upcoming jewel heist by his old boss Timo, and fears for his family's safety.
After Jack finally gets the computer chip, Tony and Michelle struggle to access its audio files in time to prevent a war.
The human lie detector finds himself on the ropes. Cal's interest in illegal underground fights comes back to haunt him when a companion and competitor is killed.
The team searches for two women who were abducted in broad daylight, two neighbors taken from a suburban home.