<P> Jim (John Krasinski) and Pam Halpert (Jenna Fischer) argue whether ghosts are real after she claims to have seen one at a pub where she used to work . Meanwhile, Dwight Schrute (Rainn Wilson) dresses up as Sarah Kerrigan from StarCraft, but Toby Flenderson (Paul Lieberstein) takes off his wings as they had knives on them and Dwight is not allowed to bring in weapons . Bert recognizes what his costume is supposed to be and the two bond over playing StarCraft all day, ignoring everyone else . Dwight also makes Bert pretend to fire Toby, for taking away his weapons, on the grounds that he is the CEO's son . </P> <P> Throughout the party, Robert coaxes each of the employees into revealing their deepest fears . Before leaving, he tells a horror story implementing all their fears as a way to convince them not to let fear control their lives . This inspires Jim and Pam to stop their argument and Erin to talk to Andy about her feelings . </P> <P> The episode was written by story editor Carrie Kemper, sister of cast member Ellie Kemper, her second written story for the series . It was directed by one of The Office's cinematographers, Randall Einhorn, his 15th directing credit for the series . The episode is the third Halloween themed episode of the series after season two's "Halloween" and season seven's "Costume Contest". The episode also featured James Spader as Sabre CEO Robert California, who was set to appear in 15 episodes for the season . The Season Eight DVD contains a number of deleted scenes from this episode . Notable cut scenes include the rest of the office getting in the debate over whether ghosts exist, and Robert's son Bert and Dwight talking about zombies, specifically characters from The Walking Dead . </P> <P> In the episode, Dwight dresses up as Sarah Kerrigan, a character from the video game series StarCraft . Later, Toby narrates a montage of previous costumes worn by Dwight including dressed as Freddy Krueger, Jigsaw, and Pinhead, the primary antagonists from the A Nightmare on Elm Street, Saw, and Hellraiser franchises, respectively . Angela is seen dressed in the same cat that she wore in the season two episode, "Halloween". Jim, Kevin and Darryl are dressed up as professional basketball players Chris Bosh, Dwyane Wade and LeBron James, respectively . Ryan is dressed as Jesse Pinkman from the TV series Breaking Bad, wearing the character's signature yellow hoodie and beanie . </P>

Who played robert california son on the office