How to Make a Monster

Pete Dumond, chief make-up artist for 25 years at American International Studios, is fired after the studio is purchased by NBN Associates. The new management from the East, Jeffrey Clayton and John Nixon, plan to make musicals and comedies instead of the horror pictures for which Pete has created his remarkable monster make-ups and made the studio famous. In retaliation, Pete vows to use the very monsters these men have rejected to destroy them. By mixing a numbing ingredient into his foundation cream and persuading the young actors that their careers are through unless they place themselves in his power, he hypnotizes both Larry Drake and Tony Mantell (who are playing the characters the Teenage Werewolf and the Teenage Frankenstein, respectively, in the picture Werewolf Meets Frankenstein, currently shooting on the lot).

Through hypnosis, Pete urges Larry, in Teenage werewolf make-up, to kill Nixon in the studio projection room. Later, he wills the unknowing Tony, in Teenage Frankenstein make-up, to wait for Clayton in his garage at night and brutally choke him to death. Studio guard Monahan, a self-styled detective, stops in at the make-up room on his rounds one evening. He shows Pete and Rivero, Pete's reluctant assistant and accomplice, his little black book in which he has jotted down many facts, such as the late time Pete and Rivero checked out the night of the first murder. By this show of initiative, he plans to get a promotion. Apprehensive, Pete—made up as a terrifying Prehistoric Man, one of his own creations—kills Monahan in the studio commissary while on his beat.

Richards, the older guard, sees and hears nothing until he uncovers Monahan's body. Police investigators uncover two clues: a maid, Millie, describes Frankenstein's monster (Tony, in make-up), who struck her down as he fled from Clayton's murder and the police laboratory technician discovers a peculiar ingredient in the make-up left on Clayton's fingers from his death struggle with Tony. The formula matches bits found in Pete's old make-up room. The police head for Pete's house. Pete has taken Rivero, Larry and Tony for a grim farewell party to his home, which is a museum of all the monsters that he has created in his 25 years at the studio. Pete has stabbed Rivero to death secretly in the kitchen and hidden his body. Finding Larry and Tony trying to escape the locked living room, he attacks them with a knife. Larry inadvertently knocks over a candelabra, setting the living room on fire, and Pete is burned to death, trying in vain to save the lifelike heads of his monster "children" mounted on the wall. The police break through the door before the flames reach the boys and save them.