The execution of a Vatican archivist within the shadow of the Kremlin exposes a conspiracy going back three centuries—to the bloody era of the Russian Tsars. Before his murder, he manages to dispatch a coded message, a warning of a terrifying threat, one tied to a secret buried within the Golden Library of Tsars, a vast and treasured archive that had vanished into history....

In the latest riveting thriller from the #1 New York Times bestselling author, an international research station in the Coral Sea comes under siege during a geological disaster that triggers massive quakes, deadly tsunamis, and volcanic eruptions. To stop the world from burning, it’s up to Sigma Force to uncover a secret buried at the heart of our planet.
 
The T...

It begins in Africa . . . A United Nations relief team in a small village in the Congo makes an alarming discovery. An unknown force is leveling the evolutionary playing field. Men, women, and children have been reduced to a dull, catatonic state. The environment surrounding them—plants and animals—has grown more cunning and predatory, evolving at an exponential pace. The insidious phenomenon is spreading from a cursed site in the ...

For eons, the city of Troy—whose legendary fall was detailed in Homer’s Iliad—was believed to be a myth, until archaeologists in the nineteenth century uncovered its ancient walls buried beneath the sands. If Troy was real, how much of Homer’s twin tales of gods and monsters, curses, and miracles—The Iliad and The Odyssey—could also be true and awaiting discovery?...

Arriving home on Christmas Eve, Commander Gray Pierce discovers his house ransacked, his pregnant lover missing, and his best friend’s wife, Kat, unconscious on the kitchen floor. With no shred of evidence to follow, his one hope to find the woman he loves and his unborn child is Kat, the only witness to what happened. But the injured woman is in a semi-comatose state and cannot speak—until a brilliant neurologist offers a radical app...

Off the coast of Brazil, a team of scientists discovers a horror like no other, an island where all life has been eradicated, consumed, and possessed by a species beyond imagination. Before they can report their discovery, a mysterious agency attacks the group, killing them all, save one, an entomologist, an expert on venomous creatures....

To unravel a secret going back millennia, Director Crowe and Commander Grayson Pierce will be thrust to opposite sides of the globe. One will search for the truth, traveling from the plague-ridden streets of Cairo to a vast ancient tomb buried under the burning sands of the Sudan; the other will struggle to stop a mad genius locked within a remote Arctic engineering complex, risking the lives of all those he holds dear....

In the remote mountains of Croatia, an archaeologist makes a strange discovery: a subterranean Catholic chapel, hidden for centuries, holds the bones of a Neanderthal woman. In the same cavern system, elaborate primitive paintings tell the story of an immense battle between tribes of Neanderthals and monstrous shadowy figures. Who is this mysterious enemy depicted in these ancient drawings and what do the paintings mean?...

A remote military research station sends out a frantic distress call, ending with a chilling final command: Kill us all! Personnel from the neighboring base rush in to discover everyone already dead-and not just the scientists, but every living thing for fifty square miles is annihilated: every animal, plant, and insect, even bacteria....

The crash of a U.S. military research satellite in the remote wilds of Mongolia triggers an explosive search for the valuable cargo it holds: a code-black physics project connected to the study of dark energy, the energy connected to the birth of our universe. But the last blurry image from the falling satellite captures a chilling sight: a frightening look into the future, a view of a smoldering eastern seaboard of the United States in utter rui...

A yacht bearing a young American couple is attacked by Somali pirates, leading to bloodshed and the violent kidnapping of the pregnant woman on board. To aid in her rescue from the lawless and war-torn jungles of coastal Africa, Sigma Force enlists a unique search team: former Army Ranger Captain Tucker Wayne and his military war dog, Kane. But what appears to be a straightforward mission turns into a fiery ambush and betrayal-for this most-valua...

Deep in the Rocky Mountains, a gruesome discovery--hundreds of mummified bodies--stirs international attention and fervent controversy. Despite doubts about the bodies' origins, the local Native American Heritage Commission lays claim to the prehistoric remains, along with the strange artifacts found in the same cavern: gold plates inscribed with an unfathomable script....

Sigma Force confronts humankind's greatest threat in an adventure that races from the Roman Coliseum to the icy peaks of Norway, from the ruins of medieval abbeys to the lost tombs of Celtic kings. The ultimate nightmare is locked within a talisman buried by a dead saint - an ancient artifact known as the Doomsday Key....

From ancient Greek temples to glittering mausoleums, from the slums of India to the toxic ruins of Russia, two men must race against time to solve a mystery that dates back to the first famous oracle of history - the Greek Oracle of Delphi....

Operatives of the shadowy covert organization Sigma Force, Dr. Lisa Cummings, and Monk Kokkalis search for answers to the bizarre affliction aboard a cruise liner transformed into a makeshift hospital. But a sudden and savage attack by terrorist hijackers turns the mercy ship into a floating bio-weapons lab....

In the mountains of Nepal...in a remote monastery, Buddhist monks inexplicably turn to cannibalism and torture“ while Painter Crowe, director of Sigma Force, begins to show signs of the same baffling, mind-destroying malady...and Lisa Cummings, a dedicated American doctor, becomes the target of a brutal, clandestine assassin....

The crime is inhumanly cruel with horrific consequences both unthinkable and inevitable. During a service at a cathedral in Cologne, Germany, a band of armed intruders dressed in monk's robes unleashes a nightmare of blood and terror, ruthlessly gunning down worshipers and clergy alike. The killers haven’t come for the church’s gold and valuable artwork, but for a priceless treasure secreted within the preserved bones of the Three Mag...

A freak explosion in the British Museum in London ignites a perilous race for an earth-shaking power source buried deep beneath the sands of history. Painter Crowe is an agent for Sigma Force, a covert arm of the Defense Department tasked with keeping dangerous scientific discoveries out of enemy hands. When an ancient artifact points the way toward the legendary “Atlantis of the Sands,” Painter must travel across the world in search ...