Harald Leipnitz

as Inspektor Craig

Klaus Kinski

as Dave Emerson / Richard Emerson

Carl Lange

as Dr. Albert Mangrove

Ilse Steppat

as Lady Emerson

Hermann Lenschau

as Rechtsanwalt Douglas

Diana Körner

as Myrna Emerson

Gudrun Genest

as Schwester Harris

Albert Bessler

as Butler Anthony

Richard Haller

as Edward Appleton / Die Blaue Hand

Ilse Pagé

as Miss Mabel Finley

Fred Haltiner

as Wärter Reynolds

Peter Parten

as Robert Emerson

Thomas Danneberg

as Charles Emerson

Heinz Spitzner

as Richter

Siegfried Schürenberg

as Sir John

Harry Riebauer

Heinrich Gies

Karin Kenklies

Uschi Mood

Günther Notthoff

Otto Czarski