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.

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.

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.

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.

Noah Harris and Ashley Flynn are field agents for a powerful organization tasked with protecting humanity from the misuse of game-changing technology. But when they discover hidden portals that link Earth to numerous planets, they are thrust into a maze of deception and intrigue they can't begin to understand....one that not only has them battling for their very lives, but that will decide the fate of worlds. Because, inexplicably, each of the planets contain human civilizations, and the rulers of our nearest portal neighbor have come up with a brilliant, twisted plan to conquer ours.

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.

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.

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.

A thrill-seeking Harvard linguistics professor and an ultrasecret branch of the Catholic Church go head-to-head in a race to uncover the secrets of the lost city of Atlantis. The ruins of the technologically advanced, eerily enigmatic ancient civilization promise their discoverer fame, fortune, and power...but hold earth-shattering secrets about the origin of man. While world-famous linguist and archaeologist, Thomas Lourds, is shooting a film that dramatizes his flamboyant life and scientific achievements, satellites spot impossibly ancient ruins along the Spanish coast.

Admiral William H. McRaven is back with amazing stories of bravery and heroism from his career as a Navy SEAL and commander of America's Special Operations Forces.

USGS geophysicist, Mac Atwood, and volcanologist, Taylor Reed, survived being swallowed by the Earth during the earthquake swarm. They returned to the ordinarily peaceful and serene environs surrounding Mammoth Mountain and the Long Valley Caldera. When a series of seemingly minor earthquakes take place in the Sierra Nevadas, Mac the seismic detective, expresses his concern to Taylor. Her skills as a volcanologist will be tested as it appears the Long Valley Caldera, the second largest supervolcano in the U.S. behind Yellowstone, is awakening.

From the moment Sam Newman and fourteen others awaken inside metal coffins next to the burning wreckage of a spacecraft, they face a constant struggle to stay alive on a seemingly uninhabited planet light-years from home. Worse, the last any of them remember, they were back home on Earth—at a time when interstellar travel was little more than a distant pipe dream. Survival means finding out who-or what-brought them to this place. Yet what few answers they find amidst the steaming jungles and the ruins of that distant world defy all logic or sanity.

Dr. Sam Anderson is one of the most celebrated scientists in history. Ten years ago, he invented a device that changed the world forever. Now his life is about to be ripped apart—and his own creation may be to blame. One fateful morning, Sam discovers that his girlfriend has been murdered and that his daughter is accused of the crime. Sam believes she's innocent, but he can't prove it. There's only one thing he can do to save his daughter: confess to the crime. And so he does. But in the future, murderers aren't sent to prison. They're sent to the past.

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.

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 Last Flight is the heroic story of Gil Connor, an Army helicopter pilot as he struggles with the finality of a terminal illness. Haunted by the horrors of war and a turbulent past, Connor is torn between ending his embattled life and saving the survivors of a remote Alaska plane crash. Amid the turmoil of an approaching storm and almost certain failure, his underlying intentions are unknown, even to himself, until the very end.

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.

Here are thrilling, never-before-heard stories of the Army's elite aviation unit - the most daring and professional helicopter crews in the world. Special Operations pilots are notoriously reticent; they don't talk about their missions, at least not to anyone outside their small community. But now, with the publication of The Night Stalkers, Durant and Steven Hartov shed a fascinating light on these mysterious super commandos and take readers into a world they have only imagined.

Tucked away in a high-tech Tactical Operations Center, inside an isolated safehouse in the Horn of Africa, sits Agency analyst Zack Altringham. He is Kenyan-born, Princeton-educated, badly burnt-out - and condemned by his language and cultural skills to a lifetime of fighting America's shadow counter-terror wars.

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 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.

Sure to rank as one of the greatest aviation memoirs ever written, Viper Pilot is an Air Force legend's thrilling eyewitness account of modern air warfare. From 1986 to 2006, Lt. Col. Dan Hampton was a leading member of the Wild Weasels, the elite Air Force fighter squadrons whose mission is recognized as the most dangerous job in modern air combat. Weasels are the first planes sent into a war zone, flying deep behind enemy lines purposely seeking to draw fire from surface-to-air missiles and artillery. They must skillfully evade being shot down - and then return to destroy the threats, thereby making the skies safe for everyone else to follow.

Durant's experience as a prisoner in Somalia grew increasingly bizarre, crystallizing a clash of cultures by turns frightening, melancholy, hilarious, and strangely familiar. Revealing never-before-told stories with the incisive thought and emotion of one who was there, In the Company of Heroes is one man's unforgettable, true story of going to hell and making it back alive.

From June 1967 to June 1968, Tom Johnson accumulated an astonishing 1,600 flying hours piloting the UH-1 "Iroquois" - better known as the "Huey" - as part of the famous First Air Cavalry Division. His battalion was one of the most decorated units of the Vietnam War, and helped redefine modern warfare. Johnson's riveting memoir takes us into key battles and rescue missions, including those for Hue and Khe Sanh. In harrowing detail, he tells of being shot down in the battle of A Shau Valley, of surviving enemy attacks during the Tet Offensive, and of a death-defying nighttime river rescue.

Admiral William H. McRaven is back with amazing stories of bravery and heroism from his career as a Navy SEAL and commander of America's Special Operations Forces.

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.

From award-winning journalist and combat veteran Michael Hirsh comes the thrilling inside story of the Air Force's pararescue operations in Afghanistan. The first journalist to be embedded with an Air Force combat unit in the war on terrorism, Hirsh flew from Moody Air Force Base, Georgia, with the 71st Rescue Squadron to their expeditionary headquarters at a secret location in Central Asia. Unparalleled access to the pararescue jumpers - or PJs - as well as to the courageous men and women who fly them where they have to go, often under enemy fire, allowed Michael Hirsh to uncover incredible stories of courage.

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.

Death Waits in the Dark: Six Guns Don't Miss is a thrilling story about a Night Stalker at war. This is the story of an attack helicopter pilot who flew with the renowned 160th Special Operations Regiment (Airborne), and the incredible friendships Greg Coker and his fellow compatriots forged in the heat of combat.

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".