Onder andere met: Frank Wolff (Dr. Robert Matthews), Nieves Navarro (Nicole Rochard (as Susan Scott)), Simón Andreu (Michel Aumont (as Simon Andreu)), Carlo Gentili (Inspector Baxter), George Rigaud (Captain Lenny), José Manuel Martín (Smith (as J. Manuel Martin)), Fabrizio Moresco (Bergson), Luciano Rossi (Hallory), Claudie Lange (Vanessa Matthews)