Mace Franklyn, on the surface failed FBI profiler, failed husband, struggles to establish a new business. Underneath he is emotionally and physiologically scared, and frequently tripped up by his own failing physiology. Determined to identify the serial killer, he gets mired down in a battle for his professional life Roger Mandell, Narcissistic head of the Michigan Bureau of Investigation, who would rather the serial killer continue to operate with impunity, while he harvests political capital. The stakes escalate, and Mace cannot reconcile odd inconsistencies in the data and finds himself increasingly marginalized. With glimpses from the murky minds of the serial killer, and his handler, events quickly unfold, leaving the reader to determine which of these two are the most evil, and what is the disturbing truth behind Duplicity’s Child.