Filmmakers: Ken Annakin - Director, Federico De Urrutia - Writer (Italian version), Hubert Frank - Writer (German version), Jack London - Writer (novel), Peter Welbeck¹ - Writer (writer), Wyn Wells¹ - Writer (writer), Peter Yeldham - Writer, Artur Brauner - Producer, Harry Alan Towers - Producer, John Cabrera - Cinematographer, Carlo Rustichelli - Composer, Thelma Connell - Editor more »