Recruited by Sigma Force to extract a Russian pharmaceutical magnate from Siberia, former Army Ranger Tucker Wayne and his military working dog Kane must solve an ancient mystery before the modern world suffers a fate worse than death.

Pregnant veterinarian Maura Kelly, along with U.S. Marshall Jack Menard, risks everything, including the life of her unborn child, to unravel the mystery of a smuggler's cache of mutated animals, a puzzle that involves fractal intelligence, stem-cell research, and a secret history of the Book of Genesis.

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 the aid of a unique search team.

A journey of discovery turns into a fight for survival when archaeologist Dr. Henry Conklin, his nephew and their exploratory party unearth a deadly scourge from the depths of an untouched set of ancient Incan ruins.

"Former Army Ranger Tucker Wayne and his war dog Kane are thrust into a global conspiracy that threatens to shake the foundations of American democracy in this second exciting Sigma Force spinoff adventure from New York Times bestselling authors James Rollins and Grant Blackwood. Tucker Wayne's past and his present collide when a former army colleague comes to him for help. She's on the run from brutal assassins hunting her and her son. To keep them...

After a shocking discovery in Masada, Israel, Sergeant Jordan Stone, Father Rhun Korza and Dr. Erin Granger, racing against time to recover a book written by Christ's own hand, must contend with a force of ancient evil with impossible ambitions and a secret sect within the Vatican called the Sanguines.

For eons, the city of Troy--whose legendary fall was detailed in Homer's Iliad--was believed to be myth, until archaeologists in the nineteenth century uncovered its ancient walls buried beneath the sands. In the frozen tundra of Greenland, a group of modern-day researchers stumble on a shocking find: a medieval ship buried a half-mile below the ice. The ship's hold contains a collection of even older artifacts--tools of war--dating back to the Bronze...

Archaeologist Erin Granger must again join forces with Army Sgt. Jordan Stone and Father Rhun Korza to search for an ancient treasure lost for centuries. But the prized chalice has fallen into the hands of their enemy, a demon named Legion, before whom even the walls of the Vatican will fall. Third in the exciting Order of the Sanguines series. -- Audio Editions.