It's the last Halloween for "The Office," and it was a good one. After a cold opening in which Dwight gets a pumpkin stuck on his head, the episode takes off. In addition to seeing some nice costumes, fans also got a special treat in the form of guest star Stephen Colbert. The Comedy Central star appeared as Andy's college rival, and that was easily the highlight of the episode. In addition, tensions ran high for Jim and Pam, and Dwight launched another one of his trademark investigations.
Broccoli Rob causes problems for AndyAndy arrives at the office dressed up as George Michael, and he has a full a cappella group from Cornell with him. He informs the office that the group will perform at the Halloween party, but he secretly hopes that they will invite Andy to sing a solo. His signature song is "Faith," which was originally performed by the man he is dressed up as. However, Andy's joy quickly turns sour when he realizes that the young singing group doesn't really care about his old stories. He gets angrier when the students believe that his "Boner Champ" nickname belongs to Broccoli Rob, Andy's old rival. Andy confronts Rob about it, and Rob says it was just an innocent mistake. The two seem friendly, but things only get worse for Andy.
After Andy tells the students another story, he's upset that they aren't impressed. Erin tells the students that they should do "Faith" in order to make him happy. The band introduces the song and dedicates it to a special person, and Andy starts to sing with them. However, Broccoli Rob appears on the TV screen and sings the song, as well. It turns out that Rob claims the signature song as his own. A furious Andy realizes that Rob is more connected to his former college, and he decides to do something about it. After discussing a potential move with Erin, he decides to set up a scholarship fund with his family money instead. Unfortunately, he learns that his parents are now broke.
Jim and PamPam is still poking Jim about not telling her about his sports marketing business, but the two seem to be at peace. Jim has a big investment lunch for the new company, and once again makes sure that Pam is okay with him investing so much money. She says she is, and Jim reveals to his partners that he can invest $10,000. However, Pam gets majorly angry to learn that Jim invested the money even after learning that the company was already set. He wanted to look like a team player. The two have a fight during the concert, and it carries over into a metaphor about the "Monster Mash" song. Clearly, not everything is cheery for the Halperts.
Dwight's investigationIt's always fun when Dwight has an investigation under way. This time, he finds a pill that is used to treat a mental disorder. This convinces him that an insane person is running around the office off his/her meds. Nellie tells the camera crew that the pill is hers, but she doesn't want to tell Dwight. She decides to assist Dwight on his investigation, and he starts to test the sanity levels of his co-workers. Of course, Dwight ends up looking like the crazy one. Nellie reveals that the pill is hers. It helps her with anxiety, and she suggests that it can do the same for Dwight.