Meet Sam. A spy for hire. A ruthless operative. A determined hunter. And herself hunted by a hidden enemy more brutal and dogged than any she's ever known.

Sam has been running from her past her entire life. But when she returns to her job at Byzantium following a near fatal attempt on her life, she will discover the only way to escape that past... is to confront it.

Trapped in an intricate web of suspense and paranoia, Sam must discover who wants her dead at the same time as completing her mission for Byzantium before it is too late.