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 security feed. 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.
Praise for Killer Instinct "A welcome addition to the teen-sleuth genre."
-Kirkus Reviews

"Barnes knows how to keep the reader hooked, and fans will be eagerly reaching for this title and clamoring for the next in the series."
-Booklist

"This is a definite purchase for libraries...."
-School Library Journal

"Intricately plotted, this novel will keep teens guessing and leave readers eagerly waiting the next installment in The Naturals series."
-VOYA Praise for The Naturals

• YALSA Best Books for Young Adults, 2014
• YALSA Quick Picks for Reluctant Young Readers, 2014

* " A] tightly paced suspense novel that will keep readers up until the wee hours to finish." -VOYA (starred review)

"This savvy thriller grabs readers right away." -Kirkus Reviews

"It's a stay-up-late-to-finish kind of book, and it doesn't disappoint." -Publishers Weekly

"In this high-adrenaline series opener...even a psychic won't anticipate all the twists and turns." -Booklist