The character of Emily French has been rewritten more than any character in Christie's universe. She was a elderly spinster in the short story, she was a 50 something in the play and was a widow in all main screen adaptation. For the different interpretations see:
- Emily French, the character from the original short story.
- Emily French, the character from Christie's own stage adaptation (from which most subsequent adaptations are based)
- Emily French, the character from the BBC mini series