Armed monks ransack the massive Gothic cathedral in Cologne, Germany, ancient relics are stolen, and hundreds of people are murdered. Commander Gray Pierce and his team begin a harrowing search for the secrets to a mysterious ancient power.

From the depths of the Indian Ocean, a horrific plague has arisen to devastate humankind. But it is merely a harbinger of the doom that is to follow. Aboard a cruise liner transformed into a makeshift hospital, Dr. Lisa Cummings and Monk Kokkalis, operatives of SIGMA Force, search for answers to the bizarre affliction. But there are others with far less altruistic intentions. In a savage and sudden coup, terrorists hijack the vessel, turning a mercy...

Commander Gray Perce and the Sigma Force confront 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--and a secret that has already claimed the lives of a famed geneticist, a Vatican archaeologist, and a...

From New York Times bestselling author James Rollins comes a thrilling short story that delves deep beneath the city of Paris to a dark necropolis, where the only means for escape is…The Skeleton Key. Seichan is ripped out of the Sigma series for an adventure all her own-but can she survive? The beautiful and elusive assassin wakes in a hotel in Paris with a deadly electronic collar fastened to her throat. Joined by a boy who is similarly threatened,...

From New York Times bestselling author James Rollins comes a stirring story of a soldier and his military war dog who are drawn into a dark mystery tracing back to World War II and a lost treasure tied to the bones of the dead. Off the blustery streets in the medieval heart of Budapest, Captain Tucker Wayne and his war dog, Kane, rescue a mysterious woman fleeing three armed men. The secret she holds will unlock a terrible treasure, one steeped in...

The Doomsday Key: A Sigma Force Novel At Princeton University, a famed geneticist dies inside a biohazard lab. In Rome, a Vatican archaeologist is found dead in St. Peters Basilica. In Africa, a US Senator’s son is slain outside a Red Cross camp. Three murders on three continents bear a horrifying connection: all the victims are marked by a Druidic pagan cross burned into their flesh. The Last Oracle: A Sigma Force Novel What if you could bio-engineer...

"In this groundbreaking masterpiece of ingenuity and intrigue that spans 50,000 years of human history, New York Times bestselling author James Rollins takes us to mankind's next great leap. But will it mark a new chapter in our development. or our extinction? A war is coming, a battle that will stretch from the prehistoric forests of the ancient past to the cutting-edge research labs of today. In the remote mountains of Croatia, an archaeologist...

From #1 New York Times bestselling author James Rollins comes a shocking short story, where a chance mishap leads to the discovery of a weapon like no other in... Crash and Burn. On a transatlantic flight, the two black sheep of Sigma Force-Seichan and Kowalski-must set aside their mutual dislike as a mysterious fiery force knocks their aircraft out of the sky. This unlikely duo must use every skill, weapon, and bit of ingenuity to survive a night...

"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, Professor Ken Matsui from Cornell University. Strangest of all, this inexplicable threat traces back to a terrifying...

Arriving home, Commander Gray Pierce discovers his house ransacked, his pregnant lover missing, and his best friend's wife, Kat, unconscious on the kitchen floor. 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. -- Arriving home on Christmas Eve, Commander Gray Pierce discovers his house ransacked, his pregnant lover missing,...