Bound by their hands and legs. Dumped and left to freeze. First there was one. Then there were two. Now there is panic.

The latest victim was like the others — abandoned in the outskirts of El Paso. Exposed to the elements, the victims are left to die alone in the cold.

The FBI’s elite serial killer identification team, The Behavioral Analysis Unit, dispatches their top criminal profiler, Genevieve Callow and her esteemed partner, Marcus Oakley, to track down the elusive killer. The killer is crafty. Smart. Completely deranged.

In the midst of the investigation, another girl is taken, and the killer sets the countdown clock. People cower in their homes. Nobody feels safe.

What could drive someone to such violence? And why?

Unfortunately for Agent Callow, the trail is as cold as the victim’s bodies — sub-zero. The case proves to be the most difficult she’s ever worked, and the bodies are piling up.

If she fails, the mud will run red with more blood. He won’t stop.

Can Callow piece together the clues before the killer claims another life?