Meet Mr. Callaghan is a 1954 British crime drama film directed by Charles Saunders and starring Derrick De Marney and Adrienne Corri.

[1][2] The screenplay was by Brock Williams, based on the 1952 play of the same name, adapted for the stage by Gerald Verner from Peter Cheyney's 1938 novel The Urgent Hangman.

[3][4] Down at heel private detective Slim Callaghan is hired by young socialite Cynthis Meraulton to investigate other family members after her rich stepfather changes his will in her favour.

The involved plot is helped along by a few barbed lines but Derrick de Marney fails to make a sympathetic hero out of a private detective who stoops to robbery, blackmail and bribery in his investigations.

"[8] In British Sound Films: The Studio Years 1928–1959 David Quinlan rated the film as "average", writing: "Sort of street-level Thin Man is effective thick ear, short on charm.