No. 4: "Spooked" (Season 8, Episode 5)

The first Halloween episode without Michael, and it shows. This episode sees Andy taking the reins and he insists on pre-screening the entire office's costumes. Meanwhile, Robert California brings his son along and proceeds to scare the sh*t out of everyone in the office. Oh, and Dwight is dressed as Sarah Kerrigan from a fictional video game series.