Christian Windsor is a certified genius. He's also autistic. At 23 years old, with two PhDs, Christian joins the FBI's most dangerous division, The Exceptional Crimes Unit. His first assignment? A serial killer on a rampage. Nicknamed The Surgeon, he's cutting the eyeballs out of women. That's not the only psychopath lurking in the shadows, though. There's another, and Christian can't see him.

A known serial killer is once again taking lives in Chicago. Bodies drained of blood are being strewn across the city. For former Tampa homicide sergeant, Hank Rawlings, tracking down the man responsible for the killings becomes his first assignment at his new position, agent in the FBI's homicide division of the serial crimes unit. Almost before the ink dries on the new job's acceptance papers, Hank finds himself in Chicago, knee-deep in an investigation with a mounting body count.

Rookie cop Carrie Santero has always been fascinated by serial killers. As a teenager, she wrote a letter to Charles Manson in prison - and received a chilling reply. Then she came face to face with a child murderer in her small Pennsylvania town, an encounter that haunts her to this day. Now, as a detective in training, she finally has her chance to make a difference; to hunt down a psychopathic sadist who embodies the very nature of evil itself.

Sleepy little North Bend just woke up. The newly promoted Sergeant Jade Monroe and her partner, detective Jack Steele, have just been informed of an unidentified male body found at a local lake. The town is in an uproar. The victim was nearly decapitated, and murder simply doesn't happen in North Bend. As more bodies turn up, the single connection between all of the victims becomes clear - it's Jade, herself. With each new victim getting one step closer to Jade, time begins to tick away. She must find the person responsible before her loved ones, or herself, are targeted next.

What if the most dangerous serial killer is the one who hunts her own kind? By day, Leah Nachtnebel is celebrated as one of the greatest pianists of our time. By night, she becomes a ruthless killer, using her brilliant mind to hunt predators who believe they’ve escaped justice. But when her latest target unearths a connection to her dark past, Leah is thrust into the crosshairs of two relentless forces: an FBI agent determined to uncover her secrets and a sadistic serial killer who doesn’t just see her as a traitor—he sees her as a trophy he must possess.