The Kill Switch
From bestselling authors James Rollins and Grant Blackwood, the first installment in an exciting new thriller series based on the Sigma Force novels featuring former Army Ranger Tucker Wayne and his partner, Army working dog Kane, introduced in the New York Times bestseller Bloodline and the e-original story "Tracker."
Former Army Ranger Tucker Wayne and his military working dog Kane are recruited by Sigma Force to extract a Russian pharmaceutical magnate from Siberia. A scientific genius, the drug tycoon holds the biological key to a new weapon system, a danger engineered from the ancient past to terrorize the modern world.
From the frozen steppes of Russia to the sun-blasted savannahs of Africa, Tucker and Kane must piece together a mystery going back to the origins of life on Earth—before the ancient peril can destroy the heartland of America, and with it, all of humankind.
Readers also enjoyed
James Rollins
James Rollins is an internationally bestselling author renowned for his action-packed thrillers that blend historical mysteries, cutting-edge science, and gripping adventure. With a background in veterinary medicine and a deep passion for history and science, Rollins brings a unique perspective to his writing, often weaving these elements into his Sigma Force novels and other standalone books. His thrilling, page-turning narratives have earned him a loyal fanbase around the world, making him a leading figure in the realm of scientific thrillers and historical fiction.
Tucker Wayne
Tucker Wayne consists of two books. The current recommended reading order for the series is provided below.

