But that's not the crazy theory. The crazy theory is that said wife was mad at Avery for mistreating one of her dogs, so she spotted Halbach on his property, killed her, framed Avery for the crime, and then decided to (unsuccessfully) blame it on her husband instead when he pissed her off. Props to Redditor cescalina, who should probably lay off the cold medicine.
The filmmakers are criminal masterminds
Someone had to accuse directors Laura Ricciardi and Moira Demos of engineering the whole thing for sweet Netflix cash, and so the noble soul known as TILwhofarted rose to the occasion. He/she offers zero evidence to support this claim, but considering how both Steven Avery and Brendan Dassey's trials went down, that feels right.