Detective Micki Dare is a seasoned, no-nonsense cop. She doesn't need a partner, especially one like Detective Zach Harris. But the decision's been made and there's nothing she can do about it. Zach is from an experimental FBI training programme and he brings a different set of skills to the table. But no one, least of all Micki and Zach, could have predicted what those skills are really needed for. There's a new kind of evil lurking, waiting, watching, and Zach may be the only one who can stop it. Micki soon realises that there's more to her partner than meets the eye and for the first time in her life she wonders if the terror they're facing might destroy them all ...