Star prosecutor Kristen Mayhew has a dangerous secret admirer. He seems to know her every thought, her every move. He sends her letters. And he kills the criminals she herself is powerless to stop. This avenger even knows Kristen's deepest secret - the one that has kept her from surrendering her heart to Abe Reagan, the police detective sworn to protect her. Like Kristen, Reagan is haunted by the loss of something precious that can never be regained.

There is a serial killer on the loose preying on vulnerable women. The only identifiable mark the killer leaves are letters - sometimes one, sometimes two - all carved into the torsos of his victims. Together, they spell “Sydney”. When he grabs Daisy Dawson, he believes he has found his next victim. But despite her small stature, she fights back with an expertise that quickly frees her. Before fleeing the scene, Daisy also manages to grab what proves to be crucial evidence: a necklace from around the killer’s neck.

The first victim is found in a snow-covered Philadelphia field. Detective Vito Ciccotelli enlists the aid of archaeologist Sophie Johannsen to determine exactly what lies beneath the frozen ground. Despite years of unearthing things long buried, nothing can prepare Sophie for the matrix of graves dug with chilling precision. The victims buried there haunt her. But the killer isn't done yet. He is cold and calculating, the master of a twisted game. Even with Vito and Sophie hot on his trail, he will not stop.

Baltimore city Homicide Detective JD Fitzpatrick has seen a lot of horrific violence, both as a cop and during his deployment in Afghanistan, but nothing like the trail of tortured bodies that are turning up throughout the city. He’s up against a brutal killer with a very personal vendetta. And now JD is beginning to suspect that his medical examiner may be shielding some crucial evidence linked to the case.

Psychologist Faith Corcoran is desperate to escape the stalker who’s made her life a nightmare for the past year—desperate enough to run to the one place that has been her nightmare far longer. Her recent inheritance of her grandmother’s old house in Cincinnati offers sanctuary in which she can start her life anew, but requires that she face the dark memories that still resonate to this day. But she has no idea how close to home her fears still are...