Pete Dumond, the studio’s longtime chief make-up artist, stands on the edge of losing his job as NBN Associates takes over American International Studios. The new owners from the East, Jeffrey Clayton and John Nixon, intend to pivot the output toward musicals and comedies, steering away from the horror pictures that once defined the studio’s fame. They even showcase a new rock musical number on stage that features John Ashley, offering a glimpse of the kind of entertainment they plan to produce. In response, Pete vows to rebalance the studio’s fate by weaponizing the very monsters he helped create.
Pete’s chilling plan hinges on a secret formula. He blends a numbing ingredient into his foundation cream and convinces the young actors involved in the monster roles that their careers are over unless they submit to his influence. With this cream, he can dampen the will of those it touches, effectively bending them to his will. In short order, he draws into his control two rising players: the young actors portraying the creatures of his past triumphs—Larry Drake and Tony Mantell. In their Teenage Werewolf and Teenage Frankenstein make-up, they become unwitting vessels for Pete’s vendetta against the people who dismissed his artistry.
Pete pushes Larry Drake to act against Nixon—urging him, within his werewolf guise, to kill Nixon in the studio projection room. The next day, a studio guard, Monahan, sometimes called an amateur detective, stops by the make-up room and presents Pete and Rivero with his little black book. It contains fragments of a record that seem to tie the night of Jeffrey Clayton’s murder to a late checkout time of 9:12 PM, hinting at a pattern that Pete fears will expose him. Rivero, Pete’s loyal make-up assistant, watches with growing unease as the clues accumulate. Fearing exposure, Pete improvises and, in a grim display of his control, dresses as a terrifying Caveman—one of his own creations—and kills Monahan in the studio commissary while Monahan goes about his rounds.
The investigation expands as detectives pick up two crucial threads. A housemaid named Millie, the Pedestrian character, describes Frankenstein’s monster—Tony in his make-up—striking her down as he fled the scene of Clayton’s murder. At the same time, a lab technician discovers a peculiar ingredient in the make-up left on Clayton’s fingernails, a substance that matches traces found in Pete’s old make-up room. These clues point directly back to the man who once shaped the faces of Hollywood’s monsters.
Police move in on Pete’s home, where the makeup artist has corralled Rivero, Larry, and Tony for a farewell party that doubles as a macabre gallery—Pete’s living museum of every monster he created during his 25 years at the studio. Distrustful of Rivero’s loyalty, Pete attacks him with a knife, stabbing him in the kitchen. As Rivero collapses, Larry and Tony attempt to escape from the locked living room, but Pete presses the assault.
The night’s tension erupts into a blaze when Larry, awkwardly, overturns a candelabrum, and flames sweep through the house’s monster gallery. Pete, trapped among his own unsettling trophies, is burned to death while desperately trying to save the mounted heads of his “children.” The fire rages, but the police break through the locked doors just in time to pull Larry and Tony to safety, preventing a tragedy that could have erased two talented performers along with the man who created them. The studio’s dark chapter closes as the two survivors emerge from the wreckage, their lives—and careers—shaken but intact, leaving behind a haunting reminder of how far a creator might go when his art becomes his weapon.
