From the moment Nancy boards an ocean liner leaving for New York, she becomes involved in another dangerous mystery. A man on the pier gestures to someone on board in sign language. “BEWARE OF NANCY DREW AND NE,” he signals. Is NE Nelda Detweiler, a young woman who shares a cabin with Nancy, Bess and George? Adventure and intrigue follow the girls across the ocean. Before the ship finishes its voyage, Nancy defeats a man who is smuggling stolen jewelry and important government documents. This revised text is a new plot from the 1940 original text.