You would do anything for your family . . . even if they are monsters.

Rebecca Carter is back from the dead. Lost and terrified, she is gripped by two desperate urges – to find her daughter, and to sate her ravenous hunger.

Alone in the wild, Monica Carter survives on whatever small prey she can hunt down. But she needs more. One night, drawn by the maddening scent of human blood, she encounters two young brothers, who call to her as Moonflower and tell her that if she comes with them, they will keep her safe.

But Jacob and Willard Hendry are not what they seem. They know all about dying and disappearing – after all, it’s been almost three decades since they did the same.

Rebecca’s hope for a reunion with her daughter turns to terror when she realizes that the brothers aren’t like Moonflower – they chose to be what they are, relishing the slaughter, and they are leaving an increasingly bloody trail in their wake.

But as she chases them west, she isn’t alone on the road. FBI agent Sarah McGrath, haunted by the death of her partner Marc Donner moments after he killed Rebecca, is hot on her tail. McGrath wants answers, and she will stop at nothing to get them. But she never expected them to come from a shadowy figure within the Bureau . . .