Skullduggery

Skullduggery (also known as Warlock and Blood Puzzle) is a 1983 Canadian horror film directed by Ota Richter. The plot depicts the devil using a role-playing game to transform a young man into a serial killer. Plot A group of young adults working at a costume rental store also collaborate on a fantasy role-playing game. One of the players, a young man named Adam (Thom Haverstock), is the descendant of a long line of men who are all cursed by the devil. While working at the community college theater performance a strange magician appears and puts a curse on Adam, forcing him to remember the fate of his ancestors and to make him believe that he really is a warlock. Increasingly Adam is unable to determine the difference between fantasy and reality and believes that, as a warlock, he is on a quest to kill various people. As the bodies pile up, the local police are baffled and no one suspects that Adam is a deranged serial killer being commanded to kill by the devil. After playing the role playing game with instructions to kill all the members of the Apostles of Hell before they kill him, Adam attends a costume party hosted by a man named Dr. Evil, who wants Adam to join his cult and also kill most of the party guests. When the police figure out that Adam is the killer, they corner and shoot him in a factory, but his body disappears and leaves a puppet in its place.