Chuck

Sarah is forced to confront a secret from her past and feels she must do so alone, while Chuck urges her to let him help. When Sarah encounters her original handler, Kieran Ryker (guest star Tim Dekay), she fears that he will harm those closest to her, including her mom (guest star Cheryl Ladd).

Chuck and Sarah discover who’s behind the plot to destroy Carmichael Industries. Meanwhile, Ellie’s plans for a perfect Christmas begin to come apart. At the Buy More, Morgan and the gang must fend off angry customers as a computer virus threatens to ruin Christmas.

A mission to track down a computer super virus leads Chuck to return to his roots as a hacker — and to call on his biggest competition, Gertrude Verbanksi (guest star Carrie-Anne Moss), for help. Elsewhere, a new Buy More employee (guest star Danny Pudi) complicates Jeff and Lester’s friendship