With each of his #1 New York Times bestsellers, Dean Koontz has displayed an unparalleled ability to entertain and enlighten readers with novels that capture the essence of our times even as they bring us to the edge of our seats. Now he delivers a heart-gripping tour de force he's been waiting years to write, at once a love story, a thrilling adventure, and a masterwork of suspense that redefines the boundaries of primal fear and of enduring devotion.