A Solitary Man
Season 5, Episode 17 - Airs: 10/03/2010
The BAU tracks a highway serial killer. A mother of a 15-year-old girl, is questioned by Hotch after she crosses paths with the suspected murderer.
Regular cast:
David Rossi................ Joe Mantegna
Aaron Hotchner............. Thomas Gibson
Emily Prentiss............. Paget Brewster
Derek Morgan............... Shemar Moore
Dr. Spencer Reid........... Matthew Gray Gubler
Jennifer Jareau............ A.J. Cook
Penelope Garcia............ Kirsten Vangsness