Archaeologist Leah Andrews stumbles upon something inexplicable in southwestern New Mexico: Inside a dark cavern lies an undiscovered, Native American cliff dwelling abandoned for 800 years. While twisting through one of the narrow underground passageways, Leah’s flashlight illuminates the remains of a violent massacre. Ancient human remains - all slaughtered in a long-ago massacre - cover the cavern floor, along with several brilliantly colored, granite crystals. The rare gems are native to only one place on earth: A frozen mountain range in central Antarctica.

Nora Kelly, a young archaeologist in Santa Fe, receives a letter written 16 years ago, yet mysteriously mailed only recently. In it her father, long believed dead, hints at a fantastic discovery that will make him famous and rich - the lost city of an ancient civilization that suddenly vanished a thousand years ago. Now Nora is leading an expedition into a harsh, remote corner of Utah's canyon country, but what she unearths will be the newest of horrors.

One small handwritten letter, sent from a dark, remote corner of the planet and lost in the system for 60 years, is about to change the entire human race. Outside Denver, Colorado, Joe Rickards stands over a small aircraft wreckage, studying burnt remains still smoldering in a field of freshly fallen snow. He's an investigator for the NTSB, working to carefully roll back the last several hours and identify the cause of the accident. But this time, he can't.

With the help of a powerful computer system, Alison Shaw and her team are preparing to translate the first two-way conversation with the planet's second smartest species. But the team discovers much more from their dolphins than they ever expected when a secret object is revealed on the ocean floor. One that was never supposed to be found.

Former spy Maggie Bird came to the seaside village of Purity, Maine, eager to put the past behind her after a mission went tragically wrong. These days, she’s living quietly on her chicken farm, still wary of blowback from the events that forced her early retirement. But when a body turns up in Maggie’s driveway, she knows it’s a message from former foes who haven’t forgotten her. Maggie turns to her local circle of old friends—all retirees from the CIA—to help uncover the truth about who is trying to kill her, and why.

Geophysicist Jack Greer believes he may finally have found the resting place of the meteorite that wiped out the dinosaurs 65 million years ago. A few miles off the Yucatán coast, Jack and a team of scientists tow an aging drilling platform over the impact crater with the aim of securing a sample. But buried deep beneath the earth lies a shocking discovery that threatens to shatter everything we think we know about our species.

Not content with investing his fortune and watching it grow, multibillionaire Howard Christian buys rare cars that he actually drives, acquires collectible toys that he actually plays with, and builds buildings that defy the imagination. But now his restless mind has turned to a new obsession: cloning a mammoth. In a barren province of Canada, a mammoth hunter financed by Christian has made the discovery of a lifetime: an intact frozen woolly mammoth. But what he finds during the painstaking process of excavating the huge creature baffles the mind.

Down there, beyond the deepest caves, below the crust and the mantle, there is another world. An old woman locked away in a Russian asylum has a secret - knowledge of a 500-year-old manuscript written by a long-dead alchemist that will show a passage to the mythical centre of the Earth. She knows it’s real because 50 years ago, she and a team travelled there. And only she made it back. Today, caving specialist Mike Monroe leads a crew into the world’s deepest cave in the former Soviet Union.

In 2018, Canadian archaeologist Ron Jackson makes a mind-boggling discovery in Antarctica - right before disappearing without a trace, leaving behind only his controversial theory that humans have lived on Earth far, far longer than we think they have. Decades later, in 2042, when Jackson's wife dies under mysterious circumstances, an unlikely pair of investigators, Agatha Devenworth and Pano Hofer, begin investigating whether her death might be connected to Jackson's disappearance.

The Ghent Altarpiece is the most violated work of art in the world. Thirteen times it has been vandalized, dismantled, or stolen. Why? What secrets does it hold? Enter UNESCO investigator, Nicholas Lee, who works for the United Nations’ Cultural Liaison and Investigative Office (CLIO). Nick’s job is to protect the world’s cultural artifacts—anything and everything from countless lesser-known objects to national treasures. When Nick travels to Belgium for a visit with a woman from his past, he unwittingly stumbles on the trail of a legendary panel from the Ghent Altarpiece.

Kurt Austin and his crew are back to slake their thirst for action as they attempt to drown an eco-extortionist's plan to control the world's freshwater supply. From deep within the Venezuelan rain forest emanates the legend of a white goddess and a mysterious tribe with startling technical accomplishments. Few believe the tribe exists, and even fewer suspect its deity can change the course of history.

Unverified reports tell of a hidden treasure trove deep beneath the Owl Mountains in Poland. Many have tried, but all have failed to locate the legendary Nazi gold train. Jack Reilly mourns the loss of his grandmother, a Holocaust survivor, and an esteemed historian. In memory of her, the retired Delta operator tours the place of her imprisonment, the Auschwitz-Birkenau State Museum, site of the infamous Nazi concentration camp.

Former naval doctor Peter Crane is summoned to a remote oil platform in the North Atlantic to help diagnose a bizarre medical condition. But when he arrives, Crane learns that the real trouble lies far below on "Deep Storm", a stunningly advanced science-research facility built two miles beneath the surface on the ocean floor. The top-secret structure has been designed for one purpose: to excavate a recently discovered undersea site that may hold the answers to an ancient mystery.

On a desolate beach in far northern Scotland, the winter storms have been washing up all manner of things since time began. But buried in the centre of one smaller iceberg is a shard of ancient Viking pottery telling a partial tale of a hidden mysterious island beyond the ice and mist, that was home to a great treasure and even greater horrors. Thawing in the same block of ice was a rotting flap of skin that refused to be identified but had similar skin patterns to a creature not seen for 100 million years.

Carved into a moving island of ice twice the size of the United States, Ice Station Grendel has been abandoned for more than 70 years. The twisted brainchild of the finest minds of the former Soviet Union, it was designed to be inaccessible and virtually invisible. But an American undersea research vessel has inadvertently pulled too close - and something has been sighted moving inside the allegedly deserted facility, something whose survival defies every natural law.

Alec works in the Detroit Overseer-factories, building a mysterious alien device. When three strangers appear, he's provided an opportunity to escape after years of servitude. Cole, a Freeborn loner, encounters Lina after her village is destroyed by the alien Occupation. Together, they make the arduous journey to a fabled safe-zone, trying to stay one step ahead of the enemy drones on their trail. Dex is a Hunter, working for the Occupation to track down escaped factory slaves, or Roamers, at all costs. But his latest hunt uncovers a massive secret.

The attacks of September 11, 2001, prompted the creation of a robust and deadly special operations force—Task Force Dagger. Alan C. Mack, Callsign Razor 03, led a team of MH-47E helicopters and armed MH-60s. Their two-fold mission–Personnel Recovery (PR) and Unconventional Warfare (UW) involved flying in terrain and weather previously not thought possible. If that wasn’t enough, they pushed the flight envelope of their specially modified Chinooks to the limit and beyond.

In your hands is the handwritten journal depicting one man's struggle for survival. Trapped in the midst of global disaster, he must make decisions; choices that ultimately mean life, or the eternal curse to walk as one of them. Enter, if you will, into the world of the undead.

The remote and impenetrable Pakistani mountains have offered refuge to the worst enemies of civilization since the time of Alexander. Now, the world faces a new challenge. Reared from birth to harbor a seething hatred, a lone man is about to unleash a firestorm that will rage for centuries. And the window of opportunity to stop him is shutting much faster than Washington D.C. can hope to deal with. A top lethal operative, Will Parker is embedded within the terrorist's ranks to stop this catastrophic disaster.

Former SEAL Michael Harmon, Team Name ''Ghost'', retired for service injuries, is not enjoying college life. But things are about to change, if not for the better. When he sees a kidnapping, a series of, at the time logical, decisions leave him shot to ribbons and battling a battalion of Syrian commandos with only the help of three naked co-eds who answer to the names ''Bambi,'' ''Thumper'' and ''Cotton Tail.'

Troy Pearce is the CEO of Pearce Systems, a private security firm that is the best in the world at drone technologies. A former CIA SOG operative, Pearce used his intelligence and combat skills to hunt down America’s sworn enemies in the War on Terror. But after a decade of clandestine special ops, Pearce opted out. Too many of his friends had been sacrificed on the altar of political expediency. Now Pearce and his team chose which battles he will take on by deploying his land, sea, and air drones with surgical precision.

For the U.S. Navy's elite team of SEALs, the mission seemed straightforward enough: to take control of a towering, 10,240-foot mountain peak called Takur Ghar, a key post in their plan to smash Taliban al Qaeda in eastern Afghanistan.

This book is for heroes. Dustoff 7-3 tells the true story of four unlikely heroes in the rugged mountains of Afghanistan, where medics are forced to descend on wires to reach the wounded and helicopter pilots must fight wind, weather, and enemy fire to pluck casualties from some of the world's most difficult combat arenas. Complete opposites thrown together, cut off, and outnumbered, Chief Warrant Officer Erik Sabiston and his flight crew answered the call in a race against time, not to take lives - but to save them.

In this extraordinarily rare memoir by an active-duty jumper, Jason Ramos takes listeners into his exhilarating and dangerous world, explores smokejumping's remarkable history, and explains why their services are more essential than ever before.

Zombies are real. And we made them. Are you prepared for the zombie apocalypse? The Smith family is, with the help of a few marines. When an airborne "zombie" plague is released, bringing civilization to a grinding halt, the Smith family, Steven, Stacey, Sophia, and Faith, take to the Atlantic to avoid the chaos. The plan is to find a safe haven from the anarchy of infected humanity. What they discover, instead, is a sea composed of the tears of survivors and a passion for bringing hope.

In the not-too-distant future, during an unacknowledged mission inside the Syrian border, a government operative unwittingly triggers an incredible event that alters the course of society. A terrible weapon has been unleashed - a weapon that, left to run its course, will destroy the moral fabric of humanity.

Disarmed and leaderless, the United States is united no longer! Evil Russian warlords have reduced the Capitol to a smoking pile of radioactive rubble. While the destitute citizens are frozen in a state of panic, one man steps forward to seek retribution. He is a brilliant ace fighter pilot: Hawk Hunter, a lone warrior on a mission to keep alive the indomitable spirit of a forgotten dream called "America".

Ryan Drake is a man who finds people who don't want to be found. Once a British soldier, he now works for the CIA, leading an elite investigation team that tracks down missing agents. But his latest mission - to free a prisoner, code-named Maras, and bring her back onto US soil within 48 hours - is more dangerous than anything his team has attempted before. Hunted by his former comrades, Drake is left with no choice but to trust a dangerous woman he barely knows.

Cloaked by the mists of dawn, Task Force 61 - carrying tanks, aircraft, and over 5000 Marines - steams toward Syria with deadly intent. Their mission: rescue 100 hostages from a terrorist stronghold - alive. With realism seldom seen in military fiction, The Med is a magnificent and timely epic that brings the human drama of armed conflict compellingly to life.

Dreamland is the place where the nation's top minds come to develop artillery and aircraft that push beyond the cutting edge. And where the Air Force's top guns come to test them, on the frontlines of a new era in warfare. The fiasco of a spy's infiltration has the Pentagon looking for an excuse to close Dreamland down. To clean up the mess, and save Dreamland from the congressional chopping block, Lt. Colonel Tecumseh "Dog" Bastian is sent in.