Watch Chuck Versus the Sandworm

When Chuck meets a fellow government agent with a double life, a gadget whiz whose brain makes him a national security asset and a dangerous liability -- much like Chuck -- he must decide whether to turn the agent in to Sarah and Casey or help him escape. Meanwhile, Halloween, a holiday that means a lot to buddies Chuck and Morgan, is a little different this year, as Morgan feels that Chuck is neglecting their childhood memories and friendship.