A New York Times Bestselling Author U.S. Park Service ranger Anna Pigeon sets off on vacation with her friend Heath, a paraplegic Leah, a wealthy designer of outdoor equipment and their teenage daughters Elizabeth and Katie. On their second night out, Anna goes off on her own for a solo evening float. She returns to find that four armed thugs have taken the women and girls captive. With limited resources and no access to help, Anna must rescue them before it?s too late.,