In a novel as timely as it is terrifying, New York Times-bestselling author Robin Cook explores the controversial clash of politics and biotechnology.

When Dr. Daniel Lowell and his partner, Dr. Stephanie D'Agostino, discover a new cloning procedure that utilizes stem cells to treat otherwise incurable and degenerative diseases, they know they've hit the medical jackpot. But with their cutting-edge method pending approval, they run into a roadblock by the name of Senator Ashley Butler, who views their technique as an attack on traditional American values. Then Butler is diagnosed with rapidly progressing Parkinson's disease, and he must make a Faustian pact with the very doctors whose groundbreaking technology he is trying to destroy: treatment in exchange for unwavering support.

But the DNA transference procedure has never been tested before, and working under less than favorable conditions to keep the premature trial under wraps, the doctors place their careers-and their patient's life-at risk, all in the name of scientific progress. Once they hit the point of no return, they feel invincible, but when Butler starts experiencing violent, horrifying seizures, they realize their luck may have run out...