Could have been planted, I would put nothing beyond this PD. They HATED Avery and, remember, framed him in a previous case.
her car hidden in his junkyard,
Could have been planted. One of the cops read out the license plate numbers over the radio days before as if he was looking at the car. Searchers were directed to the area where the car was found.
car keys in his dresser are not evidence?
I think they were found on the floor of his bedroom, after the 6th search.
Avery probably killed her. I think the evidence you site points that way. I do find the finding of the keys after multiple searches odd, though.
But that kid’s coerced confession didn’t line up with the physical evidence. If they had cut her throats in that mess of a room, there would have been physical evidence.
Those detectives took advantage of a mentally deficient 16 year old and got him to say what they wanted to hear. And they did it without his guardian’s knowledge. the kid never had a chance, legally.