I think the police botched this one from the get-go. I lived in the area when a (still) unidentified male murder victim was discovered back in July 1980 with some female paraphernalia attributed to the vic. It's still a cold case. I suspected a serial killer back then; who else buried their victim? Since then there have been other disappeared young males. Most of the victims identified in the current case disappeared over the last few years.
The local police always denied a serial killer and I never bought that. When the case rests there needs to be a full reckoning.