Luigi Pistilliex-Inspector John Norton

Dagmar LassanderHelene Sobieski

Anton DiffringAmbassador Sobieski

Arthur O'SullivanInspector Lawrence

Werner PochathMarc Sobieski

Dominique BoscheroAmbassador Sobieski's mistress

Renato RomanoMandel, the chauffeur

Sergio DoriaWalter

Ruth DurleyNorton's mother

Valentina CorteseMadame Sobieski

Emmet Bergin

Niall Tóibín

Riccardo FredaDirector & Screenplay

Sandro ContinenzaScreenplay

Renato RomanoScreenplay

André TranchéDialogue

Günter EbertScreenplay

Richard MannNovel

Ennio NobiliProducer