When the body of 16-year-old Hayley Reid is found under the M1 motorway, Cassie and Sunny reopen a case from the turn of the millennium. Hayley had gone missing while on holiday in a seaside town in 1999, and the investigation soon centers on four close friends who were staying at a nearby holiday rental at the time.
(James Fleet): A man who has struggled with homelessness and mental health issues. Unforgotten - Season 3
: The investigation ultimately reveals that Tim Finch , the mild-mannered doctor, was responsible for Hayley's death. When the body of 16-year-old Hayley Reid is