In the trauma center of Atlanta's busiest hospital, Sara Linton treats the city's poor, wounded, and unlucky--and finds refuge from the tragedy that rocked her life in rural Grant County. Then, in one instant, Sara is thrust into a frantic police investigation, coming face-to-face with a tall driven detective and his quiet female partner.... In Undone, three unforgettable characters from Karin Slaughter's New York Times bestselling novels Faithless and Fractured collide for the first time, entering an electrifying race against the clock--and a duel with unspeakable human evil.