Franz Siebert

Set in the early part of 20th century Europe. There lived a dancer who becomes the romantic bone of contention between a humble shepherd and an imperious marquis.

After an emergency plane landing in the desert, the actress Barbara gets to know the industrialist Thomas. After they are rescued, the two live at Thomas' place in Berlin. Although she confesses her love for him, Thomas asks his brother Werner to look after Barbara, as he feels he is too consumed by work and doesn't wish to be bound to anyone. Only after a fight with his brother does Thomas realize how much in love with Barbara he really is; but by that time, she has left him. For years, Thomas searches in vain for her until one day he meets her in New York ... where she is now married.

After a detective is assaulted by thugs and placed in an asylum run by Professor Baum, he observes the professor's preoccupation with another patient, the criminal genius Dr. Mabuse the hypnotist. When Mabuse's notes are found to be connected with a rash of recent crimes, Commissioner Lohmann must determine how Mabuse is communicating with the criminals, despite conflicting reports on the doctor's whereabouts, and capture him for good.