Broke Florida newlyweds Theresa and Johnny Gray (Jane Russell, Richard Egan) were all ears when adventurer pal Dominic Quesada (Gilbert Roland) claimed a lead on a treasure-laden galleon sunk off of Cuba. Their expedition determined he was right-but retrieving the precious cargo is another matter, between the boat's position on a precipice, shark-laden waters, and some two-legged predators tracking their course. Long-sought maritime thriller co-stars Lori Nelson, Robert Keith, Joseph Calleia.