The BAU prepares to lose a member of the team. Meanwhile, SSA Jennifer JJ Jareau attempts to reunite a family in Maryland whose daughter has disappeared mysteriously as she contemplates a job offer she cannot ignore.
The lead suspect in a 1989 murder case begins to show signs of behavioural problems, prompting a court psychologist to ask Rush to re-examine the case, where the victim was murdered in front of his client.
The team helps uncover the secrets of a troubled teen's past; Loker investigates the origin of a deadly stampede at an electronics store on the day after Thanksgiving.
Simone and Sipowicz search for a bookie's killer; an unbalanced witness to a previous crime charges Simone with sexual misconduct.