Caterina Shaw's days are numbered. Her only chance for survival is a highly experimental gene treatment-a risk she willingly takes. But now Caterina barely recognizes herself. She has new, terrifying powers, an exotic, arresting body-and she's been accused of a savage murder, sending her on the run.

Mick Carrera is a mercenary and an expert at capturing elusive, clever prey. Yet the woman he's hunting down is far from the vicious killer he's been told to expect: Caterina is wounded, vulnerable, and a startling mystery of medical science. Even more, she's a beautiful woman whose innocent sensuality tempts Mick to show her exactly how thrilling pleasure can be. The heat that builds between them is irresistible, but surrendering to it could kill them both ... for a dangerous group is plotting its next move using Caterina as its deadly pawn.