To be fair to director Lesley Selander, he packs quite a bit into this whodunit. We know that "Lady Elizabeth" (Barbara Everest) has lost her precious emerald brooch, and that she suspects her ne'er-do-well nephew "John" (George Leigh) of pinching it. He denies the accusation when he finds her searching his room with "Priscilla" (Evelyn Ankers)...