Larry commits a faux pas with Sammi's fiance, and tries to start over with his mail carrier and golf club security guard.
When restaurant workers are killed in a robbery/homicide in Las Vegas, the BAU looks to a cold case that happened in the town six years ago.
Doug's memories of his glory days as a football player don't match those of his old teammates.
A teen at a high school on Quantico Marine Corps Base attaches a bomb to his body and holds his fellow students hostage.
When a missing teenager's body turns up in a trash bin, the team discovers the secret that got him killed.