NUMA director Dirk Pitt searches for the connections among newly discovered Roman artifacts, the rise of a fundamentalist movement, and the existence of a mysterious long-lost "manifest," which, if discovered again, may change the history of the world.

Meeting a former lover whose husband has disappeared and been pronounced dead, Doc Ford investigates the woman's suspicions of foul play and finds himself deep in the Everglades.

Underwater adventurer Dirk Pitt and the NUMA crew investigate a black tide infesting the ocean off Nicaragua, a study complicated by the discovery of a mysterious artifact, a powerful storm, and a conspiracy.

Sneaking an underwater look at a notorious Russian black marketeer's fancy yacht, Doc Ford emerges to discover that the marketeer's private island has been taken over by environmental extremists who threaten to kill a hostage every hour until their demands are met.

"Many dangers lurk in the deep--the worst of them are human. Thirty minutes into what should have been an easy, beginner-level dive in a remote Florida lake, the rim of a cave collapses, trapping two of Doc Ford's friends. Ford himself manages to escape and quickly surfaces to find help-but that's when his troubles only begin. Two men are waiting for him on the shore, and they are not the kind of men you want to meet at any time. Murderers and ex-cons,...

The Florida sleuth, Doc Ford, receives a call from the daughter of a dead CIA colleague, saying her mother is missing and asking for help. The search for the mother takes Ford to the Canal Zone in Panama where he encounters a deadly con man.

Winter in New York City: Doc Ford is at the Explorers Club. He foils an abduction attempt on a senator, but the companion in her car is snatched-- and buried alive, leading to a series of remarkable twists and revelations.

"Doc Ford has long lived a double life. This time, it may finally have caught up to him. The electrifying new thriller from the New York Times-bestselling author. "I'll make an example of someone close to you." On a moonless night on Sanibel Island, Florida, marine biologist Marion "Doc" Ford carefully watches a video of a hooded man executing three hostages. The man is an American working with ISIS, and in the next few days, it'll be Ford's job,...

In the final days of World War II, the Japanese launch two submarines carrying a new strain of a deadly virus to the west coast of the United States, but years after the subs are lost at sea, someone plots to use their deadly cargo.

"Murder, sunken treasure, and pirates both ancient and modern send Doc Ford on a nightmare quest in the thrilling new novel in the New York Times-bestselling series. Marine biologist Doc Ford has been known to help his friends out of jams occasionally, but he's never faced a situation like this. His old pal Carl Fitzpatrick has been chasing sunken wrecks most of his life, but now he's run afoul of the Florida Division of Historical Resources. Its...