Derwent dreams up an unbreakable alibi for a murder. Once the crime is attempted, it then falls to Pember and Brace of Scotland Yard to sort things out.

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Main Cast: Phillips Holmes, Aileen Marson, Theo Small, Morton Selten, George Merritt, Charles Hickman, Philip Hatfield, Dora Gregory, Grace Poggi

Director: Bernard Vorhaus

Writers: Vera Allinson, Michael Hankinson

Editor: Arthur Tavares

Cinematographers: Alex Bryce, Harry Rose

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