Jason Brenda Fish

When newly appointed Sheriff Shea Callahan and her college friends plan a girls' weekend in a secluded cabin on Misty Mountain, they expect laughter, wine, and memories of their last carefree days together. But the weekend takes a dark turn when a group of strangers notices their matching "Girls' Weekend" T-shirts at a small-town gas station. What begins as innocent curiosity quickly spirals into a harrowing game of cat and mouse as the women find themselves stalked and terrorized by men who seem to know every move they make. With the clock ticking and their lives on the line, Shea must ...

Dr. Theo Cray has a legendary mathematical knack for catching serial killers. Until his exposure to a mind-altering pathogen knocks him off his game. It has upended an investigation, destroyed his reputation, and left him to question his own sanity. One person still trusts him to finish the job. His former professor Amanda Paulson is helping point Cray down a logical path to his prey: a nomadic health-care worker whose murder spree stretches back decades and whose victims number in the hundreds.