Martin was also under investigation on 5 other deaths including two or more stabings , the disappearence of a German backpacker , the apparent suicide of his farther that was throw into a dam with a cerment block tyed 2 his neck and also the death of a family friend Helen Harvey whom died in a car accidend in which Martin was a passenger . Helen Harvey´s Nabours had said that in several different occasions Martin had grabed her stearing weel of her car and had droven off the road . Martin inherited $500000 from Ms Harvey´s will