An evil doctor and the greedy wife of a rich man plot to poison him so they can get their hands on his money.

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Main Cast: Boris Karloff, Joan Wyndham, Arthur Margetson, Mona Goya, Anthony Ireland, Morton Selten, Nina Boucicault, Gibb McLaughlin, J.H. Roberts, Victor Rietti

Director: Henry Edwards

Writers: Cyril Campion, H. Fowler Mear

Editor: Michael C. Chorlton

Cinematographers: William Luff, Sydney Blythe

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