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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Character: Colin Derwent
Character: Betty Findon
Character: Philip Sevilla
Character: Sir Miles Standish
Character: Inspector Pember
Character: Sgt. Brace
Character: Hunter
Character: Charwoman
Character: Dancer