Calificación
Reparto

Paul Hubschmid
John McLaren

Madeleine Fischer
Katy Dandridge

Fiorella Mari
Mary McLaren

Ivo Garrani
Professor Herbert Weisse

Dario Michaelis
Peter Leduq

Sam Galter
Randowsky

Jean-Jacques Delbo
Sergei Boetnikov

Peter Meersman
General van Dorff (uncredited)

Massimo Zeppieri
Dennis McLaren (uncredited)

Annie Bernal
Lab Assistant (uncredited)

Giacomo Rossi Stuart
Stuart (uncredited)

Gérard Landry
Landowsky (uncredited)

Shane Rimmer
John McLaren (uncredited) (voice)