A group of scientists undertake an expedition to Alaska's Federal Wilderness Zone to study the effects of global warming. The expedition changes suddenly when the group heads out on a routine foray into a glacial ice cave and makes an astonishing find.

Underwater divers Kurt Austin and Joe Zavala battle a secret Spanish brotherhood which is plotting to regain Spanish territory taken by the U.S. The action ranges from the decks of a sunken passenger liner in the Atlantic to an underwater Mayan temple. By the author of Flood Tide.

"A series of archeological expeditions unfolds through time, each one looking for the ruins of a fabled underground city-state that once flourished in a remote province near the border of present-day Iran, Pakistan, and Afghanistan. Sealed off for centuries by seismic activity, Suolucidir beckons with the promise of plunder and the glory of discovery, fantasies as varied as the imaginations of her aspiring modern-day conquerors. As the tumult of the...

Your Uncle Gilroy has found an amulet that unlocks the mystery of an ancient civilization in the Australian desert and invites you to join the archaeological dig. But is he in danger? Do you accept help from a stranger claiming to work for your uncle? How will you plan to escape from your kidnappers? Was that UFO you saw real?