In May 1940, as the German army blitzes Europe and Parisians flee their city, the chief curator of the Musée de l'Armée is ordered to get a mysterious piece of cargo out of the country. When he arrives at the port of Le Havre and learns that his intended ship has been sunk, he places the object on a decrepit steamer that sails out under German fire. In the present day, National Underwater and Marine Agency Director Dirk Pitt is on a diving expedition...

As a "Sea Hunter" and host, with novelist Clive Cussler, for the new National Geographic International television series, join Delgado as the team searches for, discovers and explores, among others, the wrecks of RMS Carpathia, the ship that rescued Titanic’s survivors; Mary Celeste, the infamous "ghost ship" found sailing alone without a soul aboard, in the mid-Atlantic in 1872; Vrouw Maria, a perfectly preserved Dutch cargo ship of 1771, discovered...