When a body is found in Holmes's 221B Baker Street lodgings on the set at Mammoth Studios during the shooting of The Valley of Fear , Groucho and his sidekick Frank Denby begin investigating. The victim is the German emigre director of the movie who was found in the great detective's... read more
Preceded by Groucho Marx, Private Eye, and followed by Groucho Marx and the Broadway Murders.
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