Hunter by Rebecca York

Kathryn is hired to socialize a criminal whose memory had been erased. But the better she gets to know him, the more she fights to strip away the lies she’d been told and get to the heart of the man. Even as the two of them grow to care deeply for each other, she knows that every move she makes only puts her in graver danger. Does the man who named himself Hunter have the skill and the cunning to save her life? And what if he has to sacrifice himself to do it?