He's cold. He's calculated. He's coming for her.
Frozen with fear, teenage orphan Catalina Mateo makes a chilling plea to Detective Jonathan Stride.
Help find the figure hunting her - a murderer with a blade that bites like the Midwestern winter.
Stride's raw instinct is to protect Cat, whose late parents' case still sends a shiver down his spine.
But his gut also tells him what he's up against - a cruel killer, whose heart is a frozen void.