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Opening cast credits above the title read as follows: "Orson Welles as Lord Mountdrago; John Gregson, Elizabeth Sellars, Emrys Jones as Edgar, Elizabeth and George; and Alan Badel as Harry-'Mr. X'-and Owen." Directors' credits appear with literary credits at the end of the film. The three segments in the film, each based on a different short story and featuring a different cast, open with introductory narration by Eamonn Andrews. Andrews first appears in a scene at the opening of the film: A man, his face concealed by a scarf, walks into a dark room and fires three shots. When the lights go on, it is apparent that he is the only person in the room. After removing the scarf from his face, Andrews talks about murder in fiction and introduces the first of three stories, which is about an artist obsessed with perfection in his work.
Actor Alan Badel is the only cast member who appears in each episode. According to a November 6, 1951 pre-production news item in the Los Angeles Examiner, Sir Ralph Richardson and Margaret Leighton were initially cast in the lead roles for "Lord Mountdrago." The news item includes the following additional information: Three Cases for Murder, which was to be released by Fidelity Pictures, was to feature a segment based on Honor de Balzac's short story "The Mysterious Mansion," filmed in Paris and starring Jean Gabin, as well as another segment starring Joan Crawford, based on the short story "A Rose for Emily" by William Faulkner. A February 25, 1953 Variety news item adds that producer Alexander Paal was considering using the Cinema-Scope widescreen process for filming.
Three Cases of Murder, an American-British co-production, was released in Great Britain in May 1955. A 1958 Daily Cinema review listed the film's length at 6,805 feet, with a running time of 75 minutes, possibly indicating extensive cuts for the film's British release.