In a gated New Mexico community, an UnSub has been killing women in their homes at night. Security camera footage reveals that no one entered or left the community around the time of the killings.
Hotch stops by a Quanitco training area to meet with recruit Ashley Seager.
A young agent whose father was a famous serial killer, Hotch hopes to gain her insight onto how to profile the families of UnSubs. When Seager refuses to help unless Hotch temporarily makes her part of the team, he does.
The BAU organizes a town meeting for the community, figuring the list of people who don't show up is a good place to start.
A few members of the neighborhood watch decide to patrol the empty streets with loaded guns instead of attending.
When a fourth woman winds up dead during the meeting, it becomes clear that the killer is one of the 25 no-shows.
Seager decides to speak with the family of the third victim.
When she mentions that the killer's family will be very sorry for what the UnSub did, the victim's huband Ben becomes enraged.
As it dawns on Seager that Ben is the killer, she manages to use stories of her own childhood to talk him into turning himself in.
She explains that it is the only way to finally make the pain go away, and to keep his relationship with his family.