Actor: Rudolf Fernau

The Strangler of Blackmoor Castle

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.

Anastasia: the Czar's Last Daughter

In 1920, an unknown 24-year-old woman was fished out of Berlin's Landwehr kanal after a suicide attempt. Since she has no papers and no answers to any questions, they soon assign them to the insane asylum Dallendorf. A co-patient believes she recognizes the Czar's daughter Anastasia Romanowa - who apparently was the only one who survived the murder of the tsar's family in 1918.

The Return of Dr. Mabuse

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 FBI agent, or maybe a Chicago mobster - investigate a series of gruesome murders connected to a maximum security prison and involving a minister who has written a book called "The Anatomy Of The Devil".

The Invisible Dr. Mabuse

Strange things happen in a revue theatre. The dancer Maria seems to be hunted by an invisible admirer. When the body of a probable FBI agent is found in a trunk the police asks FBI man Joe Como for help. Como gets interested in the revue theatre and an ominous transport firm soon. When he is receiving mysterious threatening letters he is sure that Dr. Mabuse has risen again. But what is going on at "Enterprise X" so that both the goverment and the mad genius in crime are interested in it?