Another badly researched case on your part Misi. MacDonald's hair (E5), the one he has stated for 30 years would belong to his wife's killer, was found clutched in his wife's dead hand. DNA testing proved it's his hair.
One tiny unsourced hair was found under his youngest daughter's fingernail. So was grass and dirt and a blood soaked blue pajama fibre from Mac's pajamas he wore the night he killed her. Her fingernails were not cleaned prior to her going to bed that night, nor were her hands bagged at the CS.
No dna in either hair, blood, no fingerprints, etc of Helena Stockley were found at the MacDonald crime scene nor was any dna, hair, fingerprints, fibres etc., found belonging to Greg Mitchell.
LOL again, Helena said anything to anybody. Her many confessions were not consistant with the crime scene, nor consistant with Mac's version of the crime. She was a pathetic drug addict who would have done anything for attention.
MacDonald in an amphetemene fueled rage murdered his wife and two baby daughters.