New leads in 1966 double murder BRISBANE, Thursday. - Melbourne detectives are in Queensland investigating two leads on a 1966 double murder in Victoria. They worked under cover in north Queensland for a week on one of the leads and interviewed today a man already in custody. The detectives are investigating the deaths of Mr Gary Heywood, 18, and Miss Abina Madill, 16, who disappeared out side the Shepparton Civic Centre on February 10, 1966. The decomposed bodies of the two were found 16 days later in a paddock 34 kilometers away. Mr Heywood had been battered and shot through the head and Miss Madill had been raped and clubbed to death. One of the detectives in Queensland, Detective Sergeant Frank Coates, has been working on the case since joining the Victorian homicide squad in May, 1966. The chief of the squad, Detective-Inspector Noel Jubb, said in Melbourne today that the new leads were the best police had received for several years.