"Seventeen-year-old Cassie Hobbes 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...

Eighteen-year-olds Emma Lewis and Travis Bell, recruited by the FBI to interview juvenile serial killers, must turn to a notorious teenage sociopath to help track down a new murderer.

"Friendship. Romance. Serial killers. The Naturals are on the case. 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...

Travis Bell and Emma Lewis reunite to help the FBI capture a serial killer in Pittsburgh, and they must again turn to a notorious teenage sociopath and his twin sister for help finding the murderer.

They're the last people you'd ask to help with anything, much less a murder investigation. The rich girl, the obsessive, the hypochondriac, the addict and the hot-tempered athlete. Lost causes. But with the help of a dangerous serum, the FBI erases the teens' past problems and unlocks a psychic ability within each of them. In return, all they have to do is help find the killer who's turned their small town upside down.

When seventeen-year-old Lane becomes involved in the search for a serial killer active in the Washington, D.C. area, she worries that her life-long fascination with such murderers has a very real and terrible cause.