Their magic tree house takes Jack and Annie deep into the sea, where they meet up with dolphins, sharks, and octopi as they search for the answer to an ancient riddle.

The enemy from within . . . Iranian-born British Commando Major Ray Kerman was a rising star in the SAS -- until he abruptly switched loyalties while on a mission in the Middle East. Fanatically determined to employ his brilliant talents and training in the destruction of those he once swore to protect, he is now General Ravi Rashood, leader of the world's most vicious terrorist organization -- and he has found his ultimate weapon: Barracuda 945....

When her brother is killed, brilliant marine architect Hannah Bryson must discover the volatile mystery behind a decommissioned Soviet submarine, Silent Thunder, that was recently purchased by the U.S. government for use as a maritime museum. Though the U.S. government tries to warn Hannah away, she'll stop at nothing to find the ruthless mastermind behind her brother's death. Even if it means joining forces with a mysterious man who may be even more...

Rabbit, Bird and Mouse go an underwater trip in a submarine.

Assigned a final mission aboard a dilapidated submarine, tyrannical commander Lowell Hardy alienates his crew by conducting an illegal search through Russian coastal waters, where they survey hidden nuclear fuel containers.

Professor Aronnax sets out in search of a dangerous sea monster, only to learn that the monster is really Captain Nemo's powerful submarine.

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.

"Juan Cabrillo and the crew of the Oregon are back with a new adventure in this thrilling suspense novel in Clive Cussler's #1 New York Times bestselling series"-- When the CIA realizes the identities of three American spies in Brazil have been compromised, they turn to Juan Cabrillo and the crew of the Oregon to rescue the agents. What seems a routine operation turns out to be a trap designed by Juan Cabrillo's greatest enemy, a man driven by hate...