"Killer Instinct" The Naturals series by Jennifer Lynn Barnes

"Killer Instinct" by Jennifer Lynn Barnes

 is the second book in The Naturals series. Cassie Hobbes and her team of talented teens working with the FBI face a new challenge when a copycat killer emerges—mirroring the crimes of an imprisoned murderer who has a personal connection to one of their own. To catch the killer, Cassie must navigate dangerous mind games and the darkest corners of human behavior.