Among the crimes reconstructed is the rape and murder of 16-year-old Colette Aram in Nottinghamshire eight months ago. A mysterious letter describing the crime was sent to police and help is needed to identify its writer.

ue Cook and Nick Ross will be waiting for your call in the Crimewatch studio. Police officers David Hatcher and Helen Phelps report on the latest crime news from the Incident Desk. Backing them up, investigating officers man banks of telephone lines, and local police forces around the country will be standing by to act on information received.

This month: the tragic fate of a 9-year-old Humberside boy; and a murder in the shady world of the drug dealer. Can you help the police in their hunt for the killers? There's another Aladdin's cave of stolen property - one of the treasures might be yours.

This month, the minicab murders near Heathrow Airport; within six months two cab-drivers were stabbed to death apparently for the sake of a few pounds. And the arsonist in the north east who's struck at two historic churches. There's a progress report on the new leads resulting from viewers' calls about last month's cases.

This month, the discovery of the body of a young mother that has turned a missing person inquiry into a major murder investigation; a half-million pound robbery with the help of a child's mask; and a shotgun execution on Guy Fawkes night under the cover of fireworks celebrations.

Just seven weeks ago Sgt John Speed was gunned down in a busy Leeds street during the rush hour - the police need your help. Forensic experts also need your help in identifying a mystery woman; and there's a visit to a 'red light' district in Birmingham where a sex killer is on the loose.