- Joan Hickson, who plays Mrs. Kidder in this film, starred as Jane Marple in its remake 4.50 from Paddington (1987) (TV) and many other TV-movies.
- This was the first of the "Miss Marple" series starring Margaret Rutherford.
- The character of Miss Marple's friend, Mr. Stringer, was not part of the original story. The part was written for Stringer Davis who was married to Margaret Rutherford.
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