Enter Inspector Duval

Enter Inspector Duval  is a low budget 1961 British crime film directed by Max Varnel and starring Anton Diffring, Diane Hart and Mark Singleton.

It was based on a story by Jacques Monteux.

Plot
French policeman Inspector Duval is brought to London to help his British colleagues crack a case. The investigation concerns the murder of a socialite during a jewel theft. However, it turns out Inspector Duval has ulterior motives.

Cast

 * Anton Diffring as Inspector Duval
 * Diane Hart as Jackie
 * Mark Singleton as Inspector Wilson
 * Charles Mitchell as Brossier
 * Aiden Grennell as Mark Sinclair
 * Susan Hallinan as Doreen
 * Charles Roberts as Charley
 * Patrick Bedford as Sergeant Hastings
 * James Fitzgerald as Mario

Critical reception
Monthly Film Bulletin said "Apart from the opening burglary and murder and the final pursuit, this is a sluggish detective thriller. The development is static and wordy, while the twist ending is enough to make an addict of genuine crime fiction tear his hair. Direction and performance are barely adequate."

Leslie Halliwell said: "Dim mystery with no hope of becoming a series."