A lie, a long-ago affair, a dark desire—everyone has secrets they take to the grave. No one knew that better than FBI special agent Smoky Barrett. But what secret was a very private young woman keeping that led to her very public murder? And what kind of killer was so driven and so brazenly daring that he’d take her life on a commercial airliner thirty thousand feet in midair, a killer so accomplished that he’d leave only a small souvenir behind?

These are the questions that bring Smoky and her hand-picked team of experienced manhunters from L.A. to the autumn chill of Washington, D.C., by order of the FBI director himself—and at the special request of a high-powered grieving D.C. mother.

As a mother, Smoky knows the pain of losing a child—it nearly killed her once before. As a cop with her own twisted past, she takes every murder personally, which is both her greatest strength and her only weakness. Brilliant, merciless, righteous, the killer Smoky is hunting this time is on his own personal mission, whose cost in innocent human lives he’s only begun to collect. For in his eyes no one is innocent; everyone harbors a secret sin, including Smoky Barrett.

Soon Smoky will have to face what she’s so carefully hidden even from her own team—and confront a flawless killer who knows her flaws with murderous intimacy.