Valentine's Day is interrupted when Chuck and the team are sent on a mission to England to protect a reclusive young heiress, Vivian McArthur. Meanwhile, Casey gets an offer from the mysterious Jane Bentley. Back at home, Ellie and Awesome find an unlikely solution to a parenting problem, as Morgan ponders a big move.

The episode was rated 7.97 from 508 votes.

In this Halloween episode Chuck meets a Federal agent just like him: A computer whiz whose brain is important to national security. However, Chuck soon has a personal dilemma arise when he has to decide whether or not to turn the man over to Sarah and Casey or to help him escape his handlers.

The episode was rated 7.96 from 786 votes.

Afraid that his latest setback is driving a wedge between him and Sarah, Chuck resolves to prove himself by going on a dangerous mission with the overeager Agent Rye. Meanwhile, Morgan and Casey scramble as the "Buy Morons" attempt to uncover the true identity of Greta.

The episode was rated 7.95 from 551 votes.

The team is assigned to survey the Global Launch Agency, when intel shows that someone might penetrate their security. During the surveillance someone intrudes the lab who turns out to be Casey's former sensei Ty Bennett. Meanwhile, Captain Awesome's perfect parents decide to pay Devon and Ellie a surprise visit to help them plan the wedding, and Emmett Milbarge introduces an "Employee of the Month" contest to the Buy More, but the employees start their own contest instead.

The episode was rated 7.94 from 636 votes.

Chuck, Sarah, Casey and Morgan must stop Dr.Stanley (Robert Englund) from releasing a toxin that induces nightmares... Chuck's mother's allegiances are questioned; Lester and Jeff celebrate Halloween at the Buy More.

The episode was rated 7.92 from 534 votes.

After his intuition is wrong while working on a stakeout, Chuck feels morally obligated to make things right, even when both Sarah and Casey refuse to help with Chuck's new mission. Meanwhile, Morgan has to participate in a sales competition that could decide his fate at Buy More.

The episode was rated 7.92 from 806 votes.

As the team is tasked with finding one of the CIA's "most wanted," Chuck fears that life as the Intersect may be going to Morgan's head and inflating his ego. Meanwhile Sarah helps Casey navigate his relationship with Gertrude (recurring guest star CARRIE-ANNE MOSS). Elsewhere, Captain Awesome makes a startling revelation about Jeff and Lester.

The episode was rated 7.91 from 530 votes.

As Chuck is beginning to adapt to his new life as a spy, a doctor who could possibly "cure" Chuck is murdered. Chuck then begins a high-speed fight for his life, all while trying to decide which of his two new colleagues might be out to get him. Meanwhile, Chuck's sister Ellie invites Sarah to dinner to meet the family.

The episode was rated 7.87 from 1043 votes.

Chuck foils a plan to kill Tyler Martin, an international rock star. Chuck's night out with Tyler leads to trouble. Morgan holds a contest among his fellow employees.

The episode was rated 7.75 from 611 votes.

As the team takes on a missing persons case, Chuck and company struggle to establish themselves as Carmichael Industries in the face of a rival security firm led by the tough and efficient Gertrude Verbanski (recurring guest star CARRIE-ANNE MOSS – The Matrix). Meanwhile, Morgan continues to adjust to the Intersect, while Chuck adjusts to being Morgan’s handler. Also, the Buy More finds an unlikely spokesperson to help motivate business. JEFF FAHEY (Lost, Grindhouse) and JUSTIN HARTLEY (Smallville) also guest star.

The episode was rated 7.72 from 532 votes.