Colonel Barclay is found dead and his wife is arrested for the murder, but Holmes is convinced a missing door key will reveal the true killer.

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Main Cast: Eille Norwood, Hubert Willis, Jack Hobbs, Gladys Jennings, Dora De Winton, Richard Lindsay

Director: George Ridgwell

Writers: P.L. Mannock, Arthur Conan Doyle, Geoffrey Malins

Editor:

Cinematographer:

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