Nancy and her friends are headed for the shores of Cape Mermaid, New Jersey, where they are hoping to spend a fun-filled week. But as soon as they arrive at an old inn on the beach, strange things start to happen--spooky noises, a message for help, and a possible ghost sighting. Could the rumored ghost of Cape Mermaid actually exist? Or is there more to the story than meets the eye? It's up to the Clue Crew to solve the mystery!