The Devastator — sometimes referred to as Hostile Takeover — is based on the book Office Party by Michael A. Gilbert. In the story, an accountant named Eugene (David Warner) takes his coworkers and boss hostage while they're all working overtime on Thanksgiving. In the tense film from the 1980s, the police surround the building to try to talk Eugene down, but he seemingly doesn't want to make any deals. In fact, he wants nothing at all out of this, because at this point, he has nothing to lose. He's tired of the way he's been treated, and this Thanksgiving is the last time he's willing to put up with it.