Six-part BBC drama starring Sarah Lancashire as a police sergeant investigating a ransom plot that has escalated beyond control. When Catherine Cawood (Lancashire) receives a visit from Kevin Weatherill (Steve Pemberton), a distressed member of the Yorkshire community she oversees, she is drawn into a case in which the life of Ann Gallagher (Charlie Murphy) is at stake. Kevin employed local thug Ashley Cowgill (Joe Armstrong) to kidnap Ann in the hope of extracting a ransom from his boss, and his remorse has come too late to prevent the crime. Can Catherine get to the girl in time?