Austin Trevor once claimed he was cast as Poirot because he could speak with a French accent. It was the first of three Poirot adaptations made by Twickenham Film Studios in the 1930s, followed by Black Coffee the same year, and Lord Edgware Dies in 1934, all starring Trevor as Poirot. He later appeared in The Alphabet Murders, a 1965 Christie film, playing a minor role.