I believe it to be from Unsolved Mysteries, where this man would kill his victims by shooting them in the head, then wrapping a towel around the victim's head (and sometimes their abdomen, oddly) and burying their bodies in shallow graves in wooded areas. Even if it turns out not to be from Unsolved Mysteries, can someone tell me what show aired such a case and who the killer was? Please and thank you.

I wish I could be of assistance, but I don't remember UM featuring such a case.