Inquiry On Serial Killer Kenneth McDuff

I've been wondering as to if anyone here may know as to where I can find as well as buy a DVD that tells the story on Kenneth McDuff? I was just a little boy when he was caught and still quite still a little bit young when they executed his ass.

I have a huge library of true crime movies, tv shows, and true crime books and Iwas just wondering if anyone here can offer me some help?