In their isolated Colorado farmhouse, Rowena Cooper and her two children prepare to wait out a blinding snowstorm. Two violent predators walk through the door. For these men, it’s just another stop on a long and bloody journey --- and they still have many miles to go, and lives to sacrifice, before their work is done. But for the Cooper family, nothing will ever be the same.

Meanwhile, San Francisco homicide detective Valerie Hart can’t stop thinking about the victims --- women abducted, tortured, and left with a seemingly random series of objects inside them. The case has brought her to the edge psychological destruction. And she’s losing hope of making a breakthrough before that happens.

But the murders at the Cooper farmhouse didn’t quite go according to plan. There was a survivor, Rowena’s 10-year-old daughter, Nell, who now holds the key to the killings. Injured, half-frozen, terrified, Nell has only one place to go. And that place could be even more dangerous than what she’s running from.