Why would Vole be slicing bread in his overcoat?
This bugged me a little. The defense made the case that the blood on Vole's overcoat came from his own body because he was type O just like the victim, so that it was not incriminating. Vole claimed the blood was because he was slicing bread in his home and the knife slipped and he cut himself.
His blood type was the same as the victim--fine
He cut himself slicing bread--fine
But add these two points together and it falls apart, because why the heck would he be wearing an overcoat in his kitchen while helping to make dinner?
It bugged me that the the prosecution didn't exploit this.