The Naturals

"Seventeen-year-old Cassie, who has a natural ability to read people, joins an elite group of criminal profilers at the FBI in order to help solve cold cases"--

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....