Sometimes, trusting your inner voice can be fatal... He is Mikael macCumail, leader of a vampire clan. The oldest of his kind, he is considered invincible. Deadly. Most fear him, and he's lived unchallenged for over a millennia. Until the night he loses it all. Stripped of his memory, stalked by vampires and vampire hunters alike, Mikael finds an unlikely ally in young hunter Emily Davenport. On the run with no one to turn to and no one to trust, the line between predator and prey begins to blur. In a world of unfamiliar shadows, Emily becomes his only light. Her beauty tempts him, her innocence disarms him. Mikael has waited centuries to find a woman like Emily, but when his past catches up with him and he discovers why his memory was taken, he must prepare to face an enemy he doesn't know how to defeat. An enemy with no physical body, a life form--an entity--that lives inside vampire blood, moving from one body to the next, killing. And now it wants Mikael.