A doctor who cannot figure out what is wrong with his patient refers him to a detective, whom he hopes will be able to discern the cause of his mysterious illness.
Max Landa
Detective Landa
Reinhold Schünzel
Freiherr von Mohrungen
Conrad Veidt
Wilmos, sanatorium director
Hilde Woerner
Siegnis, maid
Marga von Kierska
Frau von Riberac
Mathieu Oostermann
Art Direction
Kurt Lande
Director of Photography
Karl Mueller-Hagens
Director
Ferdinand Runkel
Novel
Paul Rosenhayn
Screenplay
