Inspector Morse: Happy Families (1992)

Morse and Lewis investigate the murder of wealthy industrialist Sir John Balcombe. There is little love lost in the Balcombe family and no great remorse when Sir John is found dead, obviously bludgeoned to death. The dead man's wife and two sons all seem worried about other things. To Morse's annoyance, there is a great deal of media coverage, some of it quite personal. He also comes under pressure from his superior, Chief Supt. Alun Armstrong, to produce results. When a second murder occurs on the Balcombe estate, Morse begins to focus on the family's history and learns that Mrs. Balcombe has a little known secret in her past.