(From the publisher):
America's Top Teen Detectives Team Up When A Crime Wave Hits The High Seas.
Nancy Drew is enjoying a luxury cruise aboard the ship where her friend George is the new social director. It seems like great fun until Nancy overhears a plan to sell CIA secrets to another country. Her vacation turns into a high-risk hunt for a deadly secret agent.
Original title: Double Crossing
Genre: Fiction→ Children & Young Adult→ Mystery