Maniac (1934)

⁣The "doctor" treats a mental patient, Buckley, but accidentally injects him with adrenaline, which causes him to go into violent fits. In one of these fits, Buckley kidnaps a woman, tears her clothes off, and rapes her. Buckley's wife discovers the body of the real doctor, and blackmails Don into turning her husband into a zombie. The ersatz doctor turns the tables on her by manipulating her into fighting with his estranged wife, Alice Maxwell, a former showgirl. When the cat-breeding neighbor Goof sees what's going on, he calls the police, who stop the fight and, following the sound of Satan the cat, find the body of the real doctor hidden behind a brick wall.