Inspector Morse: The Last Bus to Woodstock (1988)

Morse and Lewis investigate the murder of a young woman, Sylvia Kane, found dead in a pub car park. She was last seen at a bus stop asking for the times of the bus to Woodstock and was to meet as friend at the same pub where she was found. She had accepted a lift from someone in a red car and the police find an envelope on the dead girl addressed to Jennifer Coleby, a co-worker. This leads Morse to uncover a complex set of social inter-relationships and eventually, the girl's killer.