In the fourth season of this NBC spy series, Chuck (Zachary Levi) decides to return to the agency and embarks on an odyssey to find his mother (Linda Hamilton) with the help of Morgan (Joshua Gomez); still, he has yet to tell Ellie (Sarah Lancaster) what he does for a living. Nicole Richie, Olivia Munn and Dolph Lundgren join a roster of guests, which includes Rob Riggle as an eternal optimist and loose-cannon recruit.

6.Chuck vs. the Aisle of Terror - Chuck, Sarah, Casey and Morgan are sent on a mission to stop Dr. Stanley Wheelright from releasing a toxin that causes nightmares. The mission makes Team Bartowski suspicious of where Chuck's Mom's allegiances lie. Jeff and Lester make Halloween plans for the Buy More while Ellie and Awesome get a visit from Awesome's mom. 4.13 stars (Dale-4.25, David-4)

7. Chuck vs. the First Fight - In order to avoid Sarah after their first real fight Chuck heads out on a rogue mission. Meanwhile Ellie digs into the Bartowski family history. 4.25 stars (Dale-4.5, David-4)

8. Chuck vs. the Fear of Death - In an act of desperation, Chuck agrees to go on a dangerous, and potentially fatal mission with the Agent Rye to try and regain the suppressed Intersect through fear of death. Meanwhile, Jeff and Lester become suspicious of the new Greta and try to unveil the truth the only way they know how and it is up to Morgan and Casey to stop them before thing get out of hand. 4 stars.

9. Chuck vs. Phase Three - In order to escape The Belgian, Sarah, Chuck, Morgan and Casey immerse themselves in the jungles of Southeast Asia. The Belgian's mission is to discover more about the Intersect. Meanwhile, Ellie and Awesome dive into the secret Steven Bartowski left behind. 4.75 stars

10. Chuck vs. the Leftovers - It's the day after Thanksgiving and Chuck faces the most awkward of family reunions when mom comes over for dinner-along with the dangerous Alexei Volkoff. Back at the Buy More, Morgan has to deal with the busiest shopping day of the year as Jeff and Lester hatch their latest scheme. 4.63 stars (Dale-4.5, David-4.75)

11. Chuck vs. the Balcony - A mission takes Chuck, Casey and Sarah to France where they have to track down a nano-chip. Lester looks to Big Mike for love advice. 4.38 stars (Dale-4.25, David-4.5)

12. Chuck vs. the Gobbler - Sarah begins an undercover mission to save Mama Bartowski and take down Volkoff with the aid of Casey, Chuck, and Morgan. Ellie and Awesome argue over what to name their baby. 4 stars

13. Chuck vs. the Push Mix - Sarah attempts to free Mama Bartowski while Morgan and Chuck team up against Volkoff. Casey's relationship with Alex begins to develop and Ellie deals with an anxious dad-to-be Devon. 5 stars.

14. Chuck vs. the Seduction Impossible - Casey, Chuck and Sarah are sent to Morocco to rescue Roan Montgomery. Meanwhile Morgan plans to meet Alex's mother and Mary spends some time with her family. 4.38 stars (Dale-4.25, David-4.5)

15. Chuck vs. the Cat Squad - Chuck surprises Sarah with her old spy team, The C.A.T. Squad, leading to a mission in Rio. As The C.A.T. Squad works to settle a score with Augusto Gaez, old secrets and grudges come to light. Back at the Buy More, Morgan fends off the advances of Carina, a former flame and frisky member of The C.A.T Squad. 5 stars.

Disc 2 & 3 - 4.45 stars
Season 4 (Disc 1-3) - 4.50 stars
Collection (Season 1-3): 4.50 stars