In a world transformed by the Genetic Revolution, Kyle Norwood is an honest-to-God human and proud of it. His deadly skills come from hard work and not genetic sleight of hand. An easy mission to protect two Proficere Labs scientists turns into a shoot-out that leaves a scientist and a federal agent dead. Worse, the research data the scientists were carrying disappears. In a world where human derivatives are hated and feared, Sofia Rios is almost human. When a fight during her waitressing shift turns fatal, a dying scientist launches her into the shady world of scientific espionage. The unwilling trustee of research that people would kill to obtain, Sofia turns to the man who steps out of the shadows to protect her, even though he appears as dangerous and disreputable as the people who hunt her. Together, Sofia and Kyle must unravel the truth behind the illicit information she carries before one or both of them are killed. Their mutual attraction sparkles, but the spark could just as easily become an explosion if Kyle ever finds out that Sofia is a despised telekinetic.