Treasure hunters Sam and Remi Fargo are exploring the Great Pocomoke Swamp in Delaware when they are shocked to discover a World War II German U-boat. Inside, they find a bottle taken from Napoleon's "lost cellar." Fascinated, the Fargos set out to find the rest of the collection. But another connoisseur of sorts has been looking for the bottle they've just found.

Juan Cabrillo's first adventure with the Oregon - a state-of-the-art spy ship disguised as a nondescript lumber hauler - takes him and his crew into dangerous waters as they try to put Tibet back in the hands of the Dalai Lama by striking a deal with the Russians and the Chinese.

When Kurt Austin and Joe Zavala investigate a mass stranding of aquatic life in the Indian Ocean, they accidentally uncover a much deeper mystery. A strange figure soon steals NUMA’s findings, forcing a high-speed chase—someone really didn’t want them examining those dead whales. But who, and why? A cryptic text through the NUMA satellite network makes things still stranger: these odd phrases and numbers look like NUMA codes. But who could be tantalizing the crew with such specific knowledge of their tech?

On a NUMA training mission in the Caribbean, Kurt Austin and Joe Zavala catch a distress call from a nearby freighter. Leaping into action, they locate a damaged vessel and a dead captain clutching a shotgun. While searching the freighter for clues, Kurt and Joe are ambushed by crew members who seem terrified and disoriented, almost brainwashed. The trawler they were hauling has vanished, taken—the men say—by baffling lights that circled the ship.

A no-nonsense detective is on the trail of the sharpest and deadliest criminal mind he has ever encountered: a serial robber who murders any and all witnesses in cold-blood.