Jim Doane's 25-year-old son may or may not be dead, and he has only burned skull fragments as possible evidence. But he cannot go to the police for answers without risking his own secrets and dark past, so instead he chooses a bold step to find the truth --- a truth that takes forensic sculptor Eve Duncan down a twisted path of madness and evil and into the darkest heart of her own history.

Forensic sculptor Eve Duncan knows what it's like to be haunted by the past. For years after her daughter Bonnie was stolen from her, she fought for closure. But now as she's striving to begin anew, she can't shake the feeling that something terrible is about to happen --- or maybe already has. When her mother, Sandra, asks for help in finding a missing friend named Beth Avery, Eve is sure that she's hiding something.

The FBI doesn’t usually consult with music therapists, but Kendra Michael has perfected the art of picking up the most subtle audio, olfactory and tactile cues from the world around her. Former FBI agent Adam Kyle is a notorious master manipulator, skillfully handing criminals and colleagues alike. But now he needs Kendra’s help to find her ex, who may have run directly into the path of a serial killer.

When Catherine's old friend Hu Chang creates something so deadly, and completely untraceable, the chase is on to be the first to get it.  With rogue operative John Gallo also on the hunt, Catherine finds herself pitted against a group so villainous and a man so evil that she may not survive the quest to protect those she cares about.

With the help of her beloved Joe Quinn and CIA agent Catherine Ling, Eve Duncan has come closer than ever to finding out the truth surrounding the disappearance of her daughter. But the deeper she digs, the more she realizes that Bonnie’s father is a key player in solving this monstrous puzzle.

As a former Navy SEAL turned cop, Joe Quinn has seen the face of evil. When he first met Eve Duncan, he never expected to fall in love in the midst of her  tragedy. As their search takes them deep into a web of murder and madness, Joe and Eve must test their resolve to uncover the bone-chilling truth.