Operation: Titanic (Nancy Drew & Hardy Boys Super Mysteries #35)

Together with Bess, Nancy Drew is on a cruise to adventure—a once-in-a-lifetime opportunity to witness the raising of the Titanic. But she has uncovered evidence that their ship may be under threat—from a rogue CIA agent! As they follow the Titanic's fateful course into the icy waters of the Northern Atlantic, Nancy suspects that they too are on a voyage to disaster.

Meanwhile...

A helicopter swoops down onto the deck of Nancy's ship. On board are Frank and Joe Hardy! Posing as journalists, they are in fact working undercover for the Network, the ultrasecret U.S. intelligence agency. Their mission: Unmask a master of disguise who is planning to use the ship to pull off a chilling terrorist act. For Nancy Drew and the Hardys, uncovering the explosive truth about what lies a the bottom of the ocean is just the tip of the iceberg in...Operation Titanic.