An older movie around the 1970=or 80s about a msn abducting young boys and abusing them and killing them a sheriff found bodies buried on his properties I think it star one of the Carridne brothers but not sure what it was called or if a true story.
“Chiefs” (1983 TV mini-series)?
It starred Keith Carradine. IMDb page below.
https://www.imdb.com/title/tt0084997/?ref_=nm_flmg_act_114