All In by Jennifer Lynn Barnes

Three casinos. Three murders. Three days.

When a series of gruesome killings rocks Las Vegas, Cassie Hobbes and the Naturals are brought in to crack the case. Despite the team’s exceptional profiling abilities, these murders defy expectations: each victim is killed in a completely different way. The crimes take place in public, yet the killer remains invisible, leaving no trace on surveillance footage. The only clue is a string of numbers tattooed on each victim’s wrist—a code that holds the key to the mystery. As the Naturals dig deeper, the case grows more dangerous, and the stakes rise. 

At the same time, Cassie faces a deeply personal challenge. For the first time in years, there’s a breakthrough in her mother’s long-cold case, reopening old wounds. With tensions within the team building and danger closing in from all sides, Cassie and the Naturals must navigate impossible challenges—and make even tougher choices—to solve the case before it’s too late.