A strangler is loose on a British estate, and he not only strangles his victims but brands an “M” onto their foreheads before he decapitates them.

A group of hooded vigilantes hang wrong-doers with a rope stolen from Scotland Yard’s Black Museum.

Dr. Mabuse has been locked away for years in an insane asylum. Suddenly crimes start occurring and no one knows the culprit. A detective goes to visit the Doctor to…

The supposedly dead and buried Mabuse returns to his criminal activities, as his longtime foe Police Inspector Lohmann, a dauntless girl reporter, and an American – who may be an…