A brainy young librarian must rely on Witness Protection to keep her alive as she jumps from one alias to another, always just a step ahead of her murderous ex and his cartel henchmen. Forced to keep a low profile by taking menial jobs in random locations, she solves murders from the foothills of Montana to the gritty streets of L.A. as her rational, intellectual persona slips away and a streetwise, world-weary woman takes charge.