Inspector Duval comes to London to help crack the case of a socialite murdered during a jewel heist.

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Main Cast: Anton Diffring, Diane Hart, Mark Singleton, Charles Mitchell, Aiden Grennell, Susan Hallinan, Charles Roberts, Patrick Bedford, James Fitzgerald

Director: Max Varnel

Writers: Jacques Monteux, J. Henry Piperno

Editor: Oswald Hafenrichter

Cinematographer: Stephen Dade

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