Tags: Criminal.
Dennis Allen (1951–1987) was a Melbourne based drug dealer who was reported to have murdered many victims. He was the oldest son of criminal matriarch Kath Pettingill. He died of heart disease in 1987 in prison custody awaiting trial for murder.Allen nicknamed Mr. Death or Mr. D was believed to have been involved in up to 13 underworld murders including the dismembering of a Hells Angels biker with a chainsaw.