Lon Chaney plays the deformed Phantom who haunts the Paris Opera House causing murder and mayhem in an attempt to force the management to make the woman he loves a star.
A prosecuting attorney treats every homicide case as first degree murder and uses miniature replicas of human skulls to tally the death sentences that he garners. Then he himself is beset by the urge to murder.
A door to door saleman tries to sell Gracie Allen some books with hilarious results in this episode of the Burns and Allen show.
An actor is killed during the performance of a play and critic Tony Woolrich (Dave O’Brien) undertakes to solve the crime. Claudia Moore (Kay Aldridge, in her last movie role), the girl he loves, is suspected, but when two more deaths occur, she is also threatened by the Phantom Killer.