The writer, Robert Bloch, re-used the basic premise of this story as the wraparound segment of his 1972 anthology horror film 'Asylum'
Mrs Sanders (Beatrice Kay) recounts her time with Fred Karno. She shows a photo of Arthur Stanley Jefferson and says he was Charles Chaplin's understudy, later changing his name to Stan Laurel. This is true. Laurel was Chaplin's understudy when working with Fred Karno.