Jupiter Jones, Pete Crenshaw, and Bob Andrews fly to Skeleton Island at Alfred Hitchcock's request to help Pete's father with a motion picture and secretly find out why their equipment is being sabotaged. No more do they step off the plane than they encounter trouble. The Three Investigators are stranded on an island in a storm, a phantom rides on the carousel of the abandoned amusement park, and gold doubloons on the bottom of the sea bed hint at lost pirate treasure never found by the superstitious fishing village. Can Jupiter battle a cold and still deduce who is causing trouble in time to save the show? Can The Three Investigators find the real Secret of Skeleton Island before it's too late? Find out in this installment of The Three Investigators!