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?
Lex Barker
as FBI Agent Joe Como
Karin Dor
as Liane Martin
Werner Peters
as Martin Droste, aka Bobo the Clown
Siegfried Lowitz
as Police Commissioner Brahm
Walo Lüönd
as Detective Haase
Wolfgang Preiss
as Dr. Krone / Dr. Mabuse
Kurd Pieritz
as Dr. Bardorf
Rudolf Fernau
as Professor Erasmus
Hans Schwarz Jr.
as Henchman Max
Walter Bluhm
as Theater Watchman
Alain Dijon
as Agent Nick Prado
Heinrich Gies
as Optiker
