Scully telephones Mulder when she finishes researching the files.
When Nancy returns to her cubicle, Gary notices that, from his point of view, she appears to be dead. Meanwhile, Gary grows concerned when a fellow employee, Nancy Aaronson, is summoned to Greg's office. Mulder's interest is piqued by a reference to "hiding in the light." He telephones Scully and asks her to investigate previous X-Files cases for such a phrase. When Mulder arrives at the company, he is greeted by office manager Greg Pincus, who plays him the taped message. Somewhat irked, Mulder tells Scully he will handle the case alone, labeling himself "Monster Boy." Skinner then explains that the maker of the tape spoke of a monster threatening employees. Mulder is puzzled as to why Skinner is sending he and Scully to investigate. As a result, the company wishes to have the threat investigated. He explains that the company Gary works for, VinylRight, received an anonymous, audio-taped manifesto, on which a man threatens to commit a violent act. One morning, Skinner summons Mulder and Scully to his office.
But unbeknownst to his co-workers, Gary is convinced that his boss is an evil monster who preys on his own staff, turning them into the undead. On the surface, Gary would seem to be a mild-mannered Everyman. Gary Lambert works as a vinyl siding telemarketer in Oak Brook, Illinois. When the ordeal ends, Mulder also believes (despite his initial skepticism) that the man was not simply crazy, and that the boss actually is a monster. Mulder, along with several other people, is held hostage by an office employee who is convinced that his boss is a monster who has turned several of his co-workers into zombies.