Chuck Versus the Cat Squad

"Chuck Versus the Cat Squad" is the fifteenth episode of the fourth season of Chuck. It originally aired on February 14, 2011. As a surprise, Chuck Bartowski reunites Sarah Walker with her old spy team, the eponymous "C.A.T. Squad", which includes Carina Miller (Mini Anden). The squad flies to Rio de Janeiro to face off against their nemesis Augusto Gaez (Lou Diamond Phillips), but old grudges start to get in the way of the mission. Elsewhere, Morgan Grimes' relationship with Alex McHugh (Mekenna Melvin) is threatened by Carina's return.

Plot

Main plot

The episode begins with a Charlie's Angels-style voice-over which reveals that in 2003 the CIA had a Clandestine Attack Team (abbreviated to "C.A.T. Squad") which included Carina Miller (Mini Anden), Zondra (Mercedes Masohn), Amy (Mircea Monroe), and Sarah Walker. The squad, Sarah later reveals, was disbanded after she found a hidden transmitter in the heel of Zondra's boot and accused her of being a traitor.

The sequence is then revealed to be in Morgan Grimes' imagination, as he listens to Chuck Bartowski describe the squad. After discussing Sarah's estranged family in the previous episode, Chuck decides to surprise her by inviting the C.A.T. Squad to their engagement party. Morgan helps Chuck invite Carina, who contacts Amy and Zondra. Chuck tells Sarah, and she starts panicking, saying that she was a different person. Suddenly, the C.A.T. Squad arrives by helicopter and takes Sarah out to party.