Finally, I ask you to look at the inner plate, which contains the key-hole.

Look at the thousands of scratches all round the hole,--marks where the key has slipped.

What sober man's key could have scored those grooves?
But you will never see a drunkard's watch without them.

He winds it at night, and he leaves these traces of his unsteady hand.

Where is the mystery in all this ?" "It is as clear as daylight," I answered.