I did actually delve a little deeper for a couple of days after i watched this series. Found one of the prosecutors personal twitter, the guy who was supposed to be defending Brandon and also heard rumors that Steven Avery had prior convictions like setting a cat on fire. Maybe this documentary was biased towards the Avery family, but if i remember right the original jury verdict was 7 innocent, 3 guilty, 2 undecided, so how that ended up guilty i don't know.
It's pretty obvious the evidence was shady, i mean where was Steven supposed to of shot the victim or committed the crime?, even a professional team of forensics surely couldn't of cleaned that place up with so little dna/evidence. Who knows, i'm still mostly in favor of innocent, but could be wrong.