A well-done, CAT PEOPLE-inspired drama starring Hopper as a sailor on leave who becomes attracted to, and then obsessed with, orphan girl Lawson, who plays a mermaid at a seaside resort sideshow. Muir, the sideshow owner, warns Hopper to stay away from the girl, for two men have turned up dead after having been seen in her company. Hopper then learns that Lawson believes herself to be descended from Sea People who must kill during the full moon. Despite these disturbing facts, Hopper accepts an invitation from Lawson to go skin diving. Remaining true to her beliefs, Lawson tries to kill Hopper while underwater, but he escapes and she disappears. Several days later, H...