The Murder of Roger Ackroyd
The play was adapted into a motion picture, also entitled "Black Coffee", in 1931. Running to 78 minutes, the motion picture was produced by Julius S. Hagan and released on 19 August 1931 by Twickenham Film Studios. Austin Trevor played the role of Poirot in the motion picture. A few months earlier, he had played the same character in a screen version of the play "Alibi", made by the same film studio. ("Alibi" was an adaptation of Christie's classic whodunnit, "The Murder of Roger Ackroyd".)