and the krystal beslanowitch case is one of those cases. narrator: as for the socks being folded so near the site, to this day, simpson has refused to explain it. just one more thing that makes no sense in an utterly senseless case. mathis: joseph has an anger problem with women. joseph has an anger problem, period. i don't know, but i know he hates women. narrator: in september of 2016, joseph simpson was found guilty of aggravated murder and was sentenced to life without parole. for todd bonner, who worked the case for most of his career, justice for krystal made it all worthwhile. for every officer that was involved with us through this whole thing, it was closure. it was closure to my wife because i'd go home and i would vent to her, you know, about different things or vent to my family one way or another. probably against the rules a little bit, but you do it. and krystal became part of my family, whether i liked it or not, every day... she was there. narrator: and if a story this brutal can lead to something positive, at least one goo