When NUMA Director Dirk Pitt finds a document inside an antiquated submersible left behind a century earlier by legendary detective Isaac Bell, it reopens a mystery involving an international power scheme aimed at seizing control of a rare element.

When a scientist discovers a possible way to tap an unlimited energy source using machines that cause massive earthquakes, Kurt Austin, Joe Zavala, and their NUMA teammates race against time to locate the scientist's machines and to prevent catastrophic disasters.

As the world's oil supply is vanishing and the stock market is plummeting, the NUMA team must solve a baffling historical mystery in order to save the future.

Ruthless Austrian entrepreneur Edward Bolcke has managed to steal a crucial component of the U.S. Navy's latest submarine technology--and he has found a way to hijack the world's supply of rare earth minerals. The three Pitts, along with longstanding sidekick Al Giordino, use their usual mix of brains and brawn to see that justice is served

After witnessing a terrible coal mining accident, Detective Isaac Bell hunts for the high-level saboteurs he believes are responsible.

Investigating a series of attacks on the Southern Pacific Railroad's Cascades express lines, Detective Bell learns of the existence of an elusive saboteur who recruits and murders his own accomplices while engineering schemes of maximum havoc.

When an oil survey team is abducted after a suspicious accident, Dirk Pitt follows leads to Mongolia, where he learns about a megalomaniac's plot to supply oil to China and to undermine global oil markets.

While investigating the alarming rise in sea levels around the world, Kurt and the rest of the NUMA science team uncover a plot to upset the Pacific balance of power by triggering natural disasters that will displace billions.

"While investigating a toxic outbreak in the Caribbean Sea that may ultimately threaten the United States, Pitt unwittingly becomes involved in something even more dangerous--a post-Castro power struggle for the control of Cuba. Meanwhile, Pitt's children, marine engineer Dirk and oceanographer Summer, are on an investigation of their own, chasing an Aztec stone that may reveal the whereabouts of a vast historical Aztec treasure. The problem is, that...

Through Tanzania and Zanzibar, into the rainforests of Madagascar, and across the Indian Ocean to Indonesia and the legendary site of the 1883 Krakatoa explosion, husband-and-wife treasure-hunting team Sam and Remi Fargo and their ruthless opponents pursue the hunt for a relic--but only one can win. And the penalty for failure is death.