Paul Hubschmid
John McLaren
Acting
Madeleine Fischer
Katy Dandridge
Acting
Fiorella Mari
Mary McLaren
Acting
Ivo Garrani
Professor Herbert Weisse
Acting
Dario Michaelis
Peter Leduq
Acting
Sam Galter
Randowsky
Acting
Jean-Jacques Delbo
Sergei Boetnikov
Acting
Peter Meersman
General van Dorff (uncredited)
Acting
Massimo Zeppieri
Dennis McLaren (uncredited)
Acting
Annie Bernal
Lab Assistant (uncredited)
Acting
Giacomo Rossi Stuart
Stuart (uncredited)
Acting
Gérard Landry
Landowsky (uncredited)
Acting
Shane Rimmer
John McLaren (uncredited) (voice)
Acting