Huxley's "The Gioconda Smile" (radio, 1945).

Charles Boyer and Ann Blyth in
A Woman's Vengeance (1948)

There have been several film, TV, play, and radio versions of "The Gioconda Smile" (1921) by Aldous Huxley, who was born today in Surrey in 1894. "The Gioconda Smile," listed as one of the best mystery short stories of all time, was adapted as the film A Woman's Vengeance (1948) with Charles Boyer and a 1950 play with Basil Rathbone. The story involves a man who faces questions after the death of his wife and his marriage to a much younger woman. This 1945 radio version is from the Molle Mystery Theater.