Following post is complete spoiler- though if you read through the thread you already know.
I think its tough to watch the series and say 100% he was guilty or wasn't. A lot of evidence was left out of the documentary but there was a lot of odd stuff from the prosecution.
The big things that have me questioning: The Key (which apparently didn't have the girls DNA on it but had SA's? Interesting) and the officer who called and asked about the license plate, and the 7 who originally thought not guilty right away.
Key points I found not in the documentary: SA sweat was on the hood of the car, also. His nephew helped clean the garage shortly after and came home with bleach stained pants (Though, I find it hard to believe they could clean everything in the garage and house). He called the company the girl worked for and specifically requested her. He wrote many letters to his wife about how he hated her and wanted to kill her- he actually also said in Easter cards to his kids that he was going to kill there mom. Crazy, though apparently they had a love hate relationship like this.
Couple things I don't believe the judge allowed: He told other inmates when he left he was going to rape and murder girls and explained how he would do it. The girl complained to other workers about him being weird and one time she went he answered the door in only a towel.
If you are interested- I really found most of this on the reddit forum, head there if you really enjoyed the series and want to keep talking about it. Regardless, there seemed to be a lot of shotty stuff from the prosecution. I think its conceivable to believe SA did kill her and at the same time police planted some evidence to help the case. Ultimately, I think there was a lack of evidence to find him guilty, but really cant tell because we didn't get the whole story.
