Roteirista
Harry Alan Towers
Autor da obra original
Jack London
Carlo Rustichelli
Compositor
Artur Brauner
Produtor
Harry Alan Towers
Produtor
John Cabrera
Diretor de fotografia
Thelma Connell
Montador
Towers of London Productions
Production
CCC Filmkunst GmbH
Production
Izaro Films S.A.
Production
Oceania Films
Production
Massfilms Limited
Production
Universal Pictures France (UPF)
Production
Norsk Film AS
Production