"Well, Watson," said Holmes when our visitor had left us,
"what do you make of it all?"
"I make nothing of it,"
I answered frankly.
"It is a most mysterious business."
"As a rule," said Holmes,
"the more bizarre a thing is the less mysterious it proves to be.
It is your commonplace, featureless crimes which are really puzzling,
just as a commonplace face is the most difficult to identify.
But I must be prompt over this matter."