Chuck Versus the Fake Name

Sarah, Shaw and Casey apprehend a deadly and elusive assassin named Rafe Gruber. When Chuck arrives at Castle after their operation, he is informed he will be taking Gruber's place in a meeting with the contacts who have Gruber's target. After briefly studying his mannerisms, Chuck and Casey rendezvous with the contacts at a bar, two mobsters named Matty and Scotty, while Sarah and Shaw monitor from the van, and he successfully passes himself off as the assassin. However one of the goons recognizes Casey as an agent and mentions the name "Alex Coburn," which causes Chuck to flash. Chuck managed to remain in-character and, at Casey's subtle prompting, proceeds to torture him for information and extracts one of Casey's teeth in the process. The contacts are appeased, and Chuck's cover is further strengthened by a "raid" led by Shaw and Sarah. Chuck flashes on martial arts and "defeats" the federal agents, allowing himself and his two new "accomplices" to escape. They agree to meet again later when the situation calms down.

Later back at Castle, Chuck apologizes to Casey for pulling his tooth, but Casey instead remarks that he was impressed and proud of how he handled the situation. Rafe is taken into custody by Federal agents, and Chuck returns home for dinner with Ellie, Devon and Hannah, which Sarah and Shaw had prepared while he was debriefing. The next morning at the Buy More, Hannah mistakenly answers a call from the mobsters for Chuck, who say they will be at the store shortly. Chuck hurriedly gets back into character and meets them at the loading dock, where they smash his watch and give him a gold one as a gift to replace it, then take him to an apartment high-rise where he can gain access to his target. As they arrive, Chuck looks across to another apartment complex, a shot of over half a mile, through the sniper scope, and is stunned to learn that his target is Shaw, and that Sarah is with him.

Chuck inadvertently reveals his feelings for Sarah to Matty and Scotty, and takes advantage of their sympathies as an opportunity to "confront" his rival face-to-face, and warn Shaw that he is the Ring's target. Chuck punches Shaw and the two get into a fight to play up to the mobsters. Meanwhile, Gruber escapes custody and tracks Chuck's whereabouts. He kills both goons, who remained behind to "cover" him from their apartment, then makes his way across to deal with the team. He quickly disables Chuck, Sarah, and Shaw and, realizing that Chuck and Shaw both have feelings for her, takes Sarah hostage. Before he can kill her, Casey, who has also tracked Chuck's location, kills him with the sniper rifle.

Ellie confronts Devon about Chuck's secret relationship with Hannah, although Devon ineffectively feigns innocence in keeping secrets from her. Ellie decides to confront Chuck, but when she arrives at his and Morgan's apartment, runs into Hannah instead. Chuck invites them all to a dinner at the apartment that night so they can get to know each other. While Chuck is busy masquerading as Gruber, Sarah and Shaw fix dinner for him, and narrowly flee the apartment as Chuck, his family, and Hannah return home. There, Hannah admits she finally feels like she's found somewhere she belongs, and invites Chuck to meet her family the next evening. However Chuck is profoundly disturbed by how much he has changed and how easy it's become for him to lie to the people he cares about, and Ellie recognizes that however much he likes Hannah, he is still in love with Sarah. To protect Hannah from his job, he admits to her that there are things he can never tell her, and breaks up with her.

Following the events of the previous episode, Shaw continues his pursuit of Sarah. Sarah initially evades his advances, and tells him that she wants to break her habit of being involved with people she is partners with. She, like Chuck, is disturbed with how much he has changed and how easily he has learned to lie. She visits Shaw at his apartment and admits that watching Chuck make the transition into becoming a full-fledged spy has led her to question who she really is. Sarah then tells Shaw that her real first name is Sam. They kiss, but are interrupted by Chuck, who overheard them while carrying out his role as Gruber (see above). After the real Gruber is killed, Shaw is forced to remain in Castle now that they know the Ring has learned Shaw is still alive, and he and Sarah begin a relationship.

• There are several fake names that the title can refer to.
  • The most prominent reference is Rafe Gruber, the alias Chuck uses throughout the episode.
  • Sarah tells Shaw that her real first name, a mystery since the second episode of the series, is Sam.
  • One of Chuck's flashes was on the name "Alex Coburn", a name that is later revealed to be Casey's real name.
• The characters of Matty and Scotty directly make light of the will they/won't they subplot at the center of the fan reaction to "Chuck Versus the Mask".

• Chuck flashes on Rafe Gruber's name.
• He flashes again when one of the mobsters mentions the name Alex Coburn.
• In the same scene, Chuck flashes on advanced martial arts to "defeat" a special ops team led by Sarah and Shaw.