Sentenced to die for his role in a mercy killing, Dr. John Garth (Boris Karloff, Frankenstein) spends his final days continuing his experiments from death row. On the eve of his execution, Garth injects himself with a serum made from the blood of a homicidal maniac. Only after learning that his own death sentence has been commuted, he discovers his experiment has a dangerous - and deadly - side effect. Director Nick Grinde brings this gritty sci-fi/horror to life. Also featuring Evelyn Keyes (The Prowler, Here Comes Mr. Jordan) and Bruce Bennett (Mildred Pierce, the Treasure of the Sierra Madre).