In the vast uncharted terrain of the Jefferson Mountain range, hikers go missing all the time. Within the dead of the night, deep in the most remote area, a young girl and her twin brother watch as their family is devoured by the things that move too fast. Now as adults, Artemis and Aristotle Coleman lead Raptor Team into the heart of an underground kingdom in Jefferson, that was once the prison of the darkest evil.

Survival is not guaranteed, and neither is your sanity. Welcome to the depths of shadow and madness.

Trigger warning: this novel contains graphic violence, adult language, and sexual situations.