NEWS.com.au | New DNA suggests Ashley Coulston is behind Balaclava murders NEWS.com.au TWO missing pieces of evidence could link one of Australia's most violent killers to a series of sickening rape cases, and at least one murder. Ashley Coulston made headlines in 1978 when he attempted to sail a bath tublike yacht across the Tasman. And ... How 'Australia's worst serial killer and rapist' flew under the radar for DECADES - despite kidnapping two teachers ... |