The Doomsday Key
Released on 05.25.2010
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.
The Last Oracle
Released on 07.23.2008
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.
The Judas Strain
Released on 07.23.2007
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.
Black Order
Released on 07.23.2006
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.
Map of Bones
Released on 08.23.2010
Map of Bones is now available at a special eBook price of $1.99 in virtually any digital format until September 6th. You can read the introduction of Rachel, the mysterious mass in Cologne, and so much more! In addition, you also get a bonus excerpt from Altar of Eden. So hurry over to your favorite eBook seller soon.
Sandstorm (Sigma Prequel)
Released on 07.23.2004
An inexplicable explosion rocks the antiquities collection of a London museum, setting off alarms in clandestine organizations around the world. And now the search for answers is leading Lady Kara Kensington; her friend Safia al-Maaz, the gallery’s brilliant and beautiful curator; and their guide, the international adventurer Omaha Dunn, into a world they never dreamed existed: a lost city buried beneath the Arabian desert.
