The Theatre of Death in Paris specialises in horror presentations. A police surgeon finds himself becoming involved in the place through his attraction to one of the performers. When bloodless bodies start showing up all over town he realises there could be links with the theatre.

When his mother eloped with an Italian opera singer, Louis Mazzini was cut off from her aristocratic family. After the family refuses to let her be buried in the family mausoleum, Louis avenges his mother's death by attempting to murder every family member who stands between himself and the family fortune. But when he finds himself torn between his longtime love and the widow of one of his victims, his plans go awry.