Phoenix, 2006. Detective Clark Schwartzkopf never flinched from delivering justice. Investigating arbitrary shotgun violence, the veteran cop was quick to make disturbing links to a chilling streak of cold-hearted shootings of people and animals. Convinced he finally had the perpetrators within reach, Schwartzkopf battled interference from intrusive feds and nosy reporters, all while the dead and wounded kept coming.

This expert investigator's first-hand account of a blood-stained hunt for criminals reveals the inner workings of law enforcement and a detective's extraordinary care for over thirty-five victims. Unpacking the case with meticulous scrutiny and remarkable storytelling, Schwartzkopf reveals the wanton pathology of a psychopath and the undercover moves it took to catch and convict the killers, including the heavy toll of pursuing them day and night.