Psych: Season 4, Episode 10

4 - 10: You Can't Handle This Episode

Shawn deduces that a U.S. Army Private who was found hanged was the victim of foul play, and Juliet calls in her brother Ewan (John Cena), a former soldier who has DOD Security Clearance to help them get on the Army base. Unfortunately, Shawn comes into conflict with Juliet over his hunch that Ewan is somehow more deeply involved with the murder. As the case proceeds, Abigail (Rachael Leigh Cook) has some unwelcome news for Shawn.