All In by Jennifer Lynn Barnes

Three casinos. Three murders. Three days. And a killer who seems impossible to catch.

When a string of brutal murders shocks Las Vegas, Cassie Hobbes and the Naturals are called in to investigate. Each victim has been killed in a different way, the crimes happen in crowded public places, and yet the murderer leaves no trace—not even on security footage. The only connection is a mysterious sequence of numbers tattooed on each victim’s wrist, hinting at a hidden code that could reveal the killer’s identity.

As the team follows the clues, the investigation becomes increasingly dangerous. Meanwhile, Cassie receives an unexpected breakthrough in her mother’s long-unsolved case, forcing her to confront painful memories from the past.

With tensions rising, secrets emerging, and danger closing in, Cassie and the Naturals must unravel the mystery before the killer strikes again.