Henry B. Travers

Peter van Eyck

Marion Menil

Dawn Addams

Kras

Gert Fröbe

Prof. Dr. S. Jordan/Peter Cornelius/Dr. Mabuse (also as Lupo Prezzo)

Wolfgang Preiss

Hieronymus B. Mistelzweig

Werner Peters

Hoteldetektiv Berg (as Andrea Checci

Andrea Checchi

The Clubfoot

Rene Kolldehoff

No. 12

Howard Vernon

Michael Parker

David Cameron

Cornelius' Butler

Jean-Jacques Delbo

Maid (uncredited)

Christiane Maybach

Journalist

Dieter Hallervorden

Hotelingenieur

Albert Bessler

The Blonde Luck

Marielouise Nagel

Reporter

Bruno W. Pantel

Hotel Manager

Nico Pepe

Barkeeper

Wolfgang Völz

`No. 11'

Werner Buttler

Corinna

Linda Sini

Police Officer

Rolf Moebius

TV announcer

Renate Küster

Interpol-Chef

Rolf Weih

Chambermaid

Maria Milde

Rolf Möbius

BKA-Chef (uncredited)

Hans W. Hamacher

Police doctor (uncredited)

Egon Vogel