All In (The Naturals, 3) by Jennifer Lynn Barnes

In All In, the third installment of The Naturals series, Cassie Hobbes and her fellow Naturals are called to Las Vegas to investigate a series of murders that appear to be connected to a high-stakes poker game. As they delve into the glitzy and dangerous world of Las Vegas, they discover that the killer has been leaving a trail of intricate puzzles and riddles, challenging them to stay ahead. The stakes are higher than ever as the Naturals find themselves entangled in a deadly game where the rules keep changing. With lives on the line and their abilities tested to the limit, the team must work together to unravel the mystery before it’s too late.