The BAU team travels to Atlanta to help investigate the murders of women, but the clues they find lead them to look for an "unsub" who is not working alone.
The crew receives several peculiar calls during the full moon; Athena deals with a rabid criminal; Abby helps in the investigation of a caller's murder.
An unremorseful widow, an unsuspecting thief and an arrogant fitness club owner receive a taste of karma; Bobby is surprised by a call from his doctor.
A high-rise hotel crumbles under its weight after a massive earthquake shakes the city o f Los Angeles; Athena faces wreckage from a fallen freeway overpass.
The first responders are still hard at work to deal with the aftermath of a massive earthquake; Maddie helps deliver a baby on her first day on the job.
The first responders rush to save victims that are trapped in tight spots; Athena thinks about accepting a promotion that will remove her from the field.
Maddie goes for a ride-along with Athena in the hopes of being on the other end of a 9-1-1 call; Hen attempts to prevent her family from falling apart.
The first responders save people at a cemetery, haunted hayride and scary Hollywood parade; Maddie receives a strange call from a supposedly missing hiker.
A killer posts "missing" fliers, to taunt each victim, before he kills them, and it's up to the behavioral analysis team to follow each clue left behind.
BAU team investigates a killing spree located in the rural areas of Virginia, which bears striking similarities to a crime that occurred two decades earlier.