Not all vampires are Killers. The Guardians of the Night sacrifice the superior physical and psychic strength that comes with feeding on humans to protect them. But the Guardians walk a thin line, for even a single kill could leave them helplessly addicted to murder.

When detective-turned-P.I. Carolyn Mathers was left at the altar, she never once thought her fiancé had been turned into a vampire. Two years later, Gray reappears, bringing murder, mystery, and an unbelievable tale of Guardians, blood-thirsty Killers, and his own transformation with him. And he's been accused of murder.

A first-rate P.I., Carolyn is determined to help. Gray won’t allow what he is now to taint her -- but Carolyn vows to never let him go again. But will helping Gray mean becoming a creature of the night?