The Thorpes were the perfect couple: young, attractive, and ideally matched. But the veil of perfection can mask many secrets. When the Thorpes are found dead in their tasteful Flagstaff living room-having committed double-suicide-alarms go off in the executive offices of Eden, Incorporated, the worldwide matchmaking phenomenon that uses its astonishing artificial intelligence to create supercouples and guarantee its customers just one thing: lifelong happiness. Enter Christopher Lash, a gifted former FBI forensic psychologist who is brought in by Eden to perform a quick-and quiet-investigation. As Lash conducts his detailed "psychological autopsy," he delves deep into the seemingly ordinary private lives of the Thorpes, all the while trying to suppress a personal tragedy of his own that has been kept buried in the past. But when another perfectly matched couple commits double-suicide, Lash finds himself suddenly pulled in to the many hidden layers of Eden, Incorporated. It is an astonishing world-one inhabited by Eden's genius, reclusive founder, Richard Silver-a world that inadvertently may bring Lash face-to-face with his own demons.