Oh and speaking from experience, just because somebody is capable of a crime such as murder doesn't automatically make them evil despite what the media and society as a whole might think.

I've known a couple of people who are easily capable of such things including a woman a couple of years ago who actually tried to murder her own severely abusive alcoholic mother by attempting to poison one of her drinks but failed and yet, I learned more about how to improve myself and my problems through her than I ever did through a "normal" person, especially therapists so there's that.

So trust your own instincts and not the law nor what other people (including him) say and go from there.