1. The watch could not have been broken during a fight. It was clear that there was not
a fight because Mr. Olson was stabbed in the back through his chair. So, the time was a
2. The mess and the coffee was a setup, because there was no fight and it would be a
little difficult for Joseph to enter and put on some gloves to fight with a cup of coffee in
3. The last proof is that the cup of coffee only had one type of fingerprints. If Mary
touched the cup (which she says she did), there should be some fingerprints of hers on it,
unless she was wearing some gloves.