"Chuck Versus Tom Sawyer" is the fifth episode of the second season of Chuck. It originally aired on October 27, 2008. Life in espionage takes its toll on Chuck Bartowski and everyone is taking notice. Chuck tries to explain his unusual behavior to Ellie Bartowski and to the quirky Buy More efficiency expert Emmett Milbarge (Tony Hale), but a new assignment only complicates things. After a global terrorist comes searching for Jeff Barnes, Chuck is forced to socialize with Jeff in order to find out what role the oddball plays in the mission.