30-40% of serial killers are never caught. 

What if the reason was more terrifying than the murderers themselves?

FBI profiler Evelyn Cross has spent her career inside the darkest minds in America. But when her daughter is killed under mysterious circumstances, the boundaries between the living and the dead begin to blur. In a devastating act of desperation, Evie orchestrates a deception that shatters her career-and her soul.

Now, years later, a new killer emerges-the enigmatic Cartographer, a remorseless predator mapping his victims in blood. Drawn back into the hunt, Evie must face both human monsters and an otherworldly force that offers her one impossible a chance at retribution.

But at what price?

As she navigates a world of corruption, occult crime, and supernatural horrors, Evie uncovers a network where murder is procedural, and justice comes at a deadly cost. To stop the Cartographer, she must embrace the very darkness she's denied existing-becoming something neither wholly human nor spirit.