Seventeen-year-old Cassie is a natural at reading people. Piecing together the tiniest details, she can tell you who you are and what you want. But it’s not a skill that she’s ever taken seriously. That is, until the FBI come knocking: they’ve begun a classified program that uses exceptional teenagers to crack infamous cold cases, and they need Cassie. What Cassie doesn’t realize is that there’s more at risk than a few unsolved homicides—especially when she’s sent to live with a group of teens whose gifts are as unusual as her own. Sarcastic, privileged Michael has a knack for reading emotions, which he uses to get inside Cassie’s head—and under her skin. Brooding Dean shares Cassie’s gift for profiling, but keeps her at arm’s length. Soon, it becomes clear that no one in the Naturals program is what they seem. And when a new killer strikes, danger looms closer than Cassie could ever have imagined. Caught in a lethal game of cat and mouse with a killer, the Naturals are going to have to use all of their gifts just to survive.

Seventeen-year-old Cassie Hobbes has a gift for profiling people. Her talent has landed her a spot in an elite FBI program for teens with innate crime-solving abilities, and into some harrowing situations. After barely escaping a confrontation with an unbalanced killer obsessed with her mother’s murder, Cassie hopes she and the rest of the team can stick to solving cold cases from a distance. But when victims of a brutal new serial killer start turning up, the Naturals are pulled into an active case that strikes too close to home: the killer is a perfect copycat of Dean’s incarcerated father—a man he’d do anything to forget. Forced deeper into a murderer’s psyche than ever before, will the Naturals be able to outsmart the enigmatic killer’s brutal mind games before this copycat twists them into his web for good? With her trademark wit, brilliant plotting, and twists that no one will see coming, Jennifer Lynn Barnes will keep readers on the edge of their seats (and looking over their shoulders) as they race through the pages of this thrilling novel.

Three casinos. Three bodies. Three days. After a string of brutal murders in Las Vegas, Cassie Hobbes and the Naturals are called in to investigate. But even with the team's unique profiling talents, these murders seem baffling: unlike many serial killers, this one uses different methods every time. All of the victims were killed in public, yet the killer does not show up on any tape. And each victim has a string of numbers tattooed on their wrist. Hidden in the numbers is a code—and the closer the Naturals come to unraveling the mystery, the more perilous the case becomes. Meanwhile, Cassie is dealing with an equally dangerous and much more painful mystery. For the first time in years, there's been a break in her mother's case. As personal issues and tensions between the team mount, Cassie and the Naturals will be faced with impossible odds—and impossible choices.

New victims. New betrayals. New secrets. When Cassie Hobbes joined the FBI’s Naturals program, she had one goal: uncover the truth about her mother’s murder. But now, everything Cassie thought she knew about what happened that night has been called into question. Her mother is alive, and the people holding her captive are more powerful—and dangerous—than anything the Naturals have faced so far. As Cassie and the team work to uncover the secrets of a group that has been killing in secret for generations, they find themselves racing a ticking clock. The bodies begin piling up, the deaths hit closer and closer to home, and it soon becomes apparent that this time, the Naturals aren’t just hunting serial killers. They’re being hunted themselves.

Cassie Hobbes has been working with the FBI since she was a teenager. Now twenty-three years old, she and her fellow Naturals have taken over running the program that taught them everything they know. As a unit, they're responsible for identifying new Naturals—and solving particularly impossible cases. When their latest case brings back a ghost from their past, Cassie and the other Naturals find themselves racing against the clock—and reliving their own childhood traumas.In a small, coastal town in Maine, there has been a rash of teen suicides—or at least, that's what the police believe. Mackenzie McBride, age twelve, thinks differently. Desperate to make herself heard, she stands at the top of a lighthouse, threatening to jump... unless the FBI agents who rescued her from a kidnapper at age six come to hear her out.Enter the Naturals. It doesn't take Cassie long to realize that Mackenzie isn't bluffing: she truly is convinced that the suicides are murder, and she really will jump if she can't get the FBI to believe her. To the outside world, Mackenzie is nothing more than a traumatized child. But so was Cassie, once upon a time. So were Michael, Dean, Sloane, Lia, and Celine. With a storm rolling in off the ocean and Mackenzie's position becoming more precarious by the moment, the Naturals have very little time to get to the truth about the deaths—and about twelve-year-old Mackenzie McBride.