The MPU investigates the abduction of a young child, whose abduction is likely revenge related to her father's work.

A foster care worker is reported as missing, but after he ends his own life, the MPU starts to investigate a pregnant woman he was seen with who has been missing for two years. Meanwhile, Sidney follows Keith and fears he may be dangerous.

Jason and Mike search the Allegheny Mountains to find a missing couple. Meanwhile, Keith joins a trauma therapy group and bonds with another patient.