The Gun Is a Sawd Off Shotgun

Macdonald said he had heard no evidence yet that any stranger was ever in the house at all. Holmes dismissed the subject with a wave. Macdonald shook his obstinate scotch head. I'm asking you to consider what it involves if you suppose that this gun was ever brought into the house, and that all these strange things were done by a person from outside. Oh, man, it's inconceivable. It's clean against common sense. He has never seen a gun of this sort in the house. The gun was made to conceal. That's why the barrels were odd. It would fit into any box. How could he swear that there was no such gun in the hous