Laurence Winstanley , a 24-year-old car dealer from Oldham, was last seen alive on 2 October 1988. In spite of an intensive police search he remained on the missing persons files for nearly a year. Then on 26 September 1989, the low water level in Baitings Dam, Ripponden, West Yorkshire revealed his body. He had been murdered shortly after he disappeared. Tonight police appeal for your help to find his killer.

Developments on tonight's cases based on viewer's calls.

Ricky Haywood , a 36-year-old antique dealer from Southampton, was murdered in his flat on 16 October last year. He had been shot. Was his death connected in any way with his many business deals? Tonight police appeal for your help to find his killer. Detectives are waiting for your call to the Crimewatch studio.

Developments on tonight's cases based on viewer's calls.

The programme in which viewers across the country help police to solve serious crime. Keith Burgess was a steward on British Rail who had friends all over the country. But on 17 December last year he was brutally murdered in his Bristol flat Tonight police appeal for your help to find his killer.

Developments on tonight's cases based on viewer's calls.

The programme in which viewers across the country can help police solve serious crime. Could you have seen schoolboy Michael Bolton since he disappeared from the village of Eyam in Derbyshire in May 1989? Or perhaps you hold the clue to the mysterious murder of Southall insurance salesman Surinder Gill ?

Developments on tonight's cases based on viewer's calls.

Dr David Birkett was an eminent consultant practising in Middlesbrough. He didn't seem to have any enemies, but on 3 February he was brutally murdered. Tonight, police appeal for your help to find his killer.

Developments on tonight's cases based on viewer's calls.

Perhaps you unwittingly hold the vital clue to the murder of an 11-year-old Brixton schoolboy; can throw some light on a vicious attack on a civil engineer in Norfolk; or saw something of an attempted robbery at a Midland bank in Merseyside.

Developments on tonight's cases based on viewer's calls.

On 15 July the small town of Lytham, near Blackpool, enjoyed the sunny afternoon at its annual fete. But only half a mile away two small boys suffered a serious sexual assault.

Developments on tonight's cases based on viewer's calls.

Josephine Chandler was viciously attacked on a coast-to-coast hike in North Yorkshire. In Kent an off-duty policeman was shot in a high-street raid. Ann Heron lost her life within yards of a busy road in County Durham.

Developments on tonight's cases based on viewer's calls.

The programme where viewers across the country can help police solve serious crime. Please phone [number removed]. Lines are open throughout the programme and up until midnight. Presented by Nick Ross and Sue Cook with Supt David Hatcher and DC Jacqui Hames.

Developments on tonight's cases based on viewer's calls.

On Merseyside an armed gang threatened a policeman, who feared for his life. Perhaps you saw them escaping down Penny Lane?

Developments on tonight's cases based on viewer's calls.