Lex Barker

FBI Agent Joe Como

Karin Dor

Liane Martin

Werner Peters

Martin Droste, aka Bobo the Clown

Siegfried Lowitz

Police Commissioner Brahm

Walo Lüönd

Detective Haase

Wolfgang Preiss

Dr. Krone / Dr. Mabuse

Kurd Pieritz

Dr. Bardorf

Rudolf Fernau

Professor Erasmus

Hans Schwarz Jr.

Henchman Max