In December an Essex farmer discovered a child's body buried in a field. It was 6-year-old Barry Lewis, who had gone missing from his home in London nearly three months earlier. Police need your help to catch his killer. In Cheshire, detectives believe a distinctive sports car stolen in October could lead them to an armed gang operating from Merseyside. Last month the gang raided a jeweller's shop and left the car and other vital clues behind.