All In
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.
Jennifer Lynn Barnes
Jennifer Lynn Barnes is a storyteller whose books have captivated readers with their intriguing plots, sharp wit, and well-drawn characters. With a passion for psychology and a deep understanding of human behavior, Barnes weaves complex narratives that explore the fine line between genius and madness, trust and betrayal, all while keeping her audience on the edge of their seats. Known for her engaging mysteries and psychological thrillers, Barnes creates worlds that are both thrilling and thought-provoking, making readers question everything they thought they knew.
The Naturals
The Naturals consists of four primary books, and includes one additional book that complement the series but is not considered mandatory reads and series is set to expand with the upcoming release of one more book. The current recommended reading order for the series is provided below.

