Defendants who subsequently -- and posthumously -- were cleared of any offense have died before they could receive treatment for the condition that may have led to their erroneously being booked and held as suspects.
The guy in this case was awaiting trial and under the law was considered innocent until proven otherwise. As for correctly convicted killers......
The news reports don't go into detail, but these women were held captive in his home and tortured before they were murdered and dumped.
On a side note, this man and I believe all of his victims were black. I think statistically this is highly unusual in that most serial killers are white men if I'm not mistaken.