For San Francisco homicide detective Valerie Hart, their trail of corpses - women abducted, tortured and left with a seemingly random series of objects inside them - has brought her from obsession to the edge of physical and psychological destruction. And she's losing hope of making a breakthrough before that happens.
But the slaughter 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 terrifying than what she's running from.