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

[2] 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.

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.