This comedic murder mystery tells the story of Broadway star William Gillette, admired the world over for his leading role in the play Sherlock Holmes. He has invited his fellow cast members to his Connecticut castle for a weekend of Christmas revelry. But when one of the guests is stabbed to death, the festivities in this isolated house of tricks and mirrors quickly turn dangerous. Gillette, believing his role as the famous sleuth has prepared him for just such an occasion, dons the guise of Sherlock and attempts to solve the crime.