Freshly minted FBI agent Nicholas Drummond is barely out of his Quantico training when he and his partner, Mike Caine, are called to investigate a stabbing on Wall Street. Their investigation, however, yields more questions than answers. It quickly becomes clear that the victim, John Pearce, was more than the naval historian and antiquities dealer he appeared to be. What Drummond doesn't know is that buying and selling rare books was Pearce's cover, and that he had devoted his life to discovering the whereabouts of a missing World War I U-boat concealing a stash of gold bullion, and an unexpected surprise that only raises more questions.