I would suggest not watching netflix for any real life crime cases. They're heavily biased towards innocence for whoever is accused.
The evidence against Wayne Williams is much stronger then was let on in this show. He was spotted with over half the kids including one of the last 2 adults that were killed. There were 1 or 2 girls killed and one kid was shot in the head with a .22. He probably didn't commit those murders but the others, hell yeah. I you really want to read about the case read this:
https://tinyurl.com/yxgqsga5
Every few years they "reopen" the case because enough people in atlanta still don't want to admit another black was responsible.
Same goes for Making or a murderer 1 & 2, what a shitshow. Get off Netflix and take a look at the actual evidence and it's 100% obvious Avery is guilty as sin.