Dee gets involved with a famous local rapper who might be mentally challenged, and whose success inspires the rest of the gang to start a band.

The NCIS murder case of a retired Navy Lieutenant Commander forces Ducky to reveal his participation in a secret society that solves cold cases.

The BAU hunts a stalker in San Diego who is targeting college students. Meanwhile, the team comes under Strauss’ scrutiny in the wake of the loss of Prentiss.