Definately one of Sidney Toler's livelier outings as our super sleuth. This one sees him and best sidekick - No 2. son "Jimmy" (Victor Sen Yung) embroiled in some treasure hunting aboard a ship (that doesn't actually go anywhere). "Patience Nodbury" (Ethel Griffies) is the distant descendant of the infamous pirate "Black Hook" and she has a map! Someone is trying to pinch that from her, so she cunningly divides it into four sections and shares it amongst her fellow passengers. Just in time, too - for the apparition of a "Long John Silver" peg-legged character causes the old girl to keel over an... läs resten.