Chuck Versus the Couch Lock

S4 E5: When Colonel Casey's former team returns looking for him, Chuck must decide what he's willing to sacrifice in order to find his mom. Elsewhere, Morgan works up the nerve to reveal a potentially dangerous secret to Casey. Recurring guest star Mekenna Melvin appears as Alex. Eric Roberts (The Expendables, Less Than Perfect), Joel David Moore (Bones, Avatar, Dodgeball: A True Underdog Story) and Dave Batista (WWF Raw, WWE Smackdown!) also guest star.