On Sunday 4 November, Ronald Harrison read the lesson at his local church. Three days later the body of this respectable retired headmaster was found by his cleaning lady. The police noticed cut marks on Harrison's body and what appeared to be a straightforward death quickly turned into a murder inquiry. Then the police discovered that the victim was a homosexual with a secret life, but this was just the first in a chapter of revelations.

On her way home from a party in west London a teenage girl was raped by a man posing as a minicab driver. Six months later, a teenager in Ealing was raped by a man who lured her into his car with an offer to take her home. Detectives believed they were looking for the same man. A tip-off from a Crimewatch viewer gave the police their breakthrough. Presented by Sue Cook. Producer Shirley Taylor

Dr David Birkett, an eminent and well-liked dermatologist, was found murdered in his Middlesbrough home, but police could find no motive for his killing. As detectives and forensic experts went to work, they received a chilling anonymous letter from the killer.