The BAU travels to Ozona, a small Texas community, to investigate the murders of children.
Meredith and Cristina bicker about their careers; Bailey talks to Ben about him moving back to Seattle; Shane puts himself in a risky situation; Derek receives a life-changing phone call.
Eric Matheson, a man suspected of killing his wife, is brought in for questioning by the Lightman Group. Determined to prove his innocence, he takes drastic measures that put the team's lives in danger.
While investigating a Marine's murder, the NCIS team uncovers a labyrinth of live-streaming spy cameras hidden in the rooms of a Virginia motel.
The team works on behalf of the dead - and the undead - after a murder occurs at a zombie convention. Angela decides to pursue her GED after revealing that she never graduated from high school.