Former Army Ranger Tucker Wayne and his military dog, Kane, are thrust into a global conspiracy in this second Sigma Force spinoff adventure from New York Times bestselling authors James Rollins and Grant Blackwood

Tucker Wayne's past and 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 safe, Tucker must discover who killed a brilliant young idealist?a crime that leads back to the most powerful figures in the U.S. government.

From the haunted swamplands of the deep South to the beachheads of a savage civil war in Trinidad, Tucker and his beloved war dog, Kane, must work together to discover the truth behind a mystery that dates back to World War II, involving the genius of a young code-breaker, Alan Turing . . .

They will be forced to break the law, expose national secrets, and risk everything to stop a madman determined to control the future of modern warfare for his own diabolical ends. But can Tucker and Kane withstand a force so indomitable that it threatens our future?

James Rollins is the author of international thrillers that have been translated into more than forty languages. His Sigma series has been lauded as one of the "top crowd pleasers" (New York Times) and one of the "hottest summer reads" (People magazine). In each novel, acclaimed for its originality, Rollins unveils unseen worlds, scientific breakthroughs, and historical secrets--and he does it all at breakneck speed and with stunning insight. He lives in the Sierra Nevada mountains.