Chuck Versus the Three Words

S3 E2: Chuck gets a new mission when Sarah's best friend comes through town with her fiancé, Karl (guest star Vinnie Jones - Snatch, X-Men: The Last Stand). But things get complicated when, while on the mission, Chuck wants to hash out his and Sarah's relationship problems. Can he learn to keep his emotions in check? Meanwhile, Morgan finds himself in trouble when he lies to Jeff and Lester.