The FBI's Behavioural Analysis Unit (BAU) is trained to blow your mind. The season begins with the team reeling from the presumed death of Emily Prentiss (Paget Brewster), and answering to a Senate Committee about their subsequent actions. Profiling expert David Rossi (Joe Mantegna) is faced with a personal crisis involving his ex-wife, while team leader Aaron Hotchner (Thomas Gibson) oversees his crew on a series of increasingly twisted, complex cases. But with a powerhouse team that includes Dr. Spencer Reid (Matthew Gray Gubler), Special Agent Derek Morgan (Shemar Moore), Special Agent Jennifer "JJ" Jareau (A.J. Cook) and technical analyst Penelope Garcia (Kirsten Vangsness), no killer ever makes a clean getaway.