A month ago Margo Scott was a book dealer with family and friends. Now, suddenly, she can't remember the last four weeks of her life, everyone close to her has disappeared, and she's the prime suspect in a murder. When an intruder attacks, she responds with lightning-quick moves she has no memory of ever learning. Undercover agent Jake Wise has her in his sights and can't decide if this mysterious woman is an assassin or a pawn. Is he tempted to protect her because she's innocent or because he's falling for her? Thrust together, these two loners realize that trusting each other is their only hope of survival. Because the good guys and the bad guys have one thing in common. They all want Margo Scott dead--the sooner, the better.