I did think that it was heavily biased towards Avery, but they wouldn't have a programme otherwise.
Regardless of whether Avery did it it not, the kid should never have been jailed and kept in afterwards.
The thing to me that they massively skirted around, was how / why the murdered lady ended up being killed on Avery's property and if it wasn't him, who else could it've been ?.
In regards to Brendon Dassey, there has been progress on a potential release: at the moment - the Court of Appeals in the 7th Circuit has upheld an initial ruling by a Magistrate Judge that Brendon's confession was unconstitutional as it was involuntarily coerced and therefore would be released - however the Wisconsin Justice Dept. has put forward a motion requesting a special type of hearing which requires all Judges sitting in the 7th Circuit to rehear the arguments - Brendon's defense counsel has till Thursday to respond.
In regards to who could have done it - whilst they did allude to who else could have done it a few times - in Wisconsin, you can't use this as a defense unless you can prove three things under the doctrine of Third Party Liability under State v Denny, in that you have to establish the alternative suspect has:
1. Motive
2. Opportunity
3. A direct connection to the crime
This seems to be a fairly high burden to satisfy, especially if at the same time you're trying to rebut a murder charger as well as other fairly serious charges, in such a well publicised case where it might be difficult to believe the Jurors had no bias before the trial started.