It's the dead of winter, and FBI Agents Jade Monroe and J.T. Harper are asked to assist the Gary, Indiana, police force in a possible serial killer case that has everyone stumped.A body, frozen stiff and drained of blood, is found by children playing near an old quarry. Several weeks later, a second body is discovered in an abandoned house, and the manner of death is identical. The agents race to Gary when word of a third victim comes in.With no clues and multiple frozen bodies, the agents have no idea when these women died or what the FBI is facing, yet the body count rises and the manner of death remains the same. Jade wonders whether they're heading into the dark, unknown world of the occult, a place she knows nothing about-and has no desire to.The most well-known occult leader in the area is in their sights and currently their only lead. Are the agents and local law enforcement heading down the wrong path? The final blindside shakes Jade to her core and leaves the entire police force stunned.