About the book: 2011 / A fire suddenly breaks out on the magnificent cruise ship "Emerald Dolphin", during which the brilliant scientist Elmore Eagen dies. Before his death, he conjures his daughter Kelly to save the leather briefcase, which contains his greatest invention, at any cost. However, there is a real hunt for this briefcase, and only thanks to the intervention of Dirk Pitt, the girl manages to avoid death at the hands of a hired killer. When Dirk and Kelly, consumed by curiosity, look into the briefcase to find out what kind of invention has caused such frenzied interest, they discover that the briefcase is empty! Where did its contents go if Kelly never let it out of her hands for a minute? And how is this invention related to the ancient Viking runic writings found in Dr. Eagen's cache? From the author of the bestselling series about superspy Dirk Pitt!