Divers Brad and Tony arrive in Jamaica to attempt the salvage of the "Lady Luck," which sank with all hands and a million dollars in gold. They charter a boat, the "American Beauty," skippered by the attractive Terry McBride, but their search for the ship proves fruitless. However, there is more to the "Lady Luck" than they realize, and undersea skullduggery soon emerges. This thrilling adventure weaves together the mystery of the wreck with Brad's romance with Terry and Tony's interest in cabaret singer Venita. Cast: - Robert Ryan as Brad Carlton - Anthony Quinn as Tony Nartlett - Mala Powers as Terry McBride - Suzan Ball as Venita - George Mathews as Capt. Meade - Karel Stepanek as Dwight Trevor - Hilo Hattie as Mama Mary - Lalo Rios as Calypso - Woody Strode as Djion - John Warburton as Captain Clive - Peter Mamakos as Captain Pedro Mendoza - Barbara Morrison as Madame Cecile Runtime: 87 minutes