Well, I guess if you believe that multiple law enforcement personnel engaged in a heinous conspiracy to murder an innocent woman in order to frame an innocent man then I guess it’s possible.
Not exactly. However, in the case where they demonstrably framed him there was a conspiracy to frame an innocent man.
I'm not saying Avery is innocent but the evidence in the case was very shakey. The cops had a murder on their hands. It looked like they could pin it on Avery, and they did, just like the previous case they pinned on him.
There were other suspects.