the detective's highest talent lay in the gentle art of seeking favours under the guise of conferring them!
You have a tendency, Hastings, to prefer the least likely. That, no doubt, is from reading too many detective stories.
Unless you are good at guessing, it is not much use being a detective.
There is no detective in England equal to a spinster lady of uncertain age with plenty of time on her hands.
I would like it to be said that I was a good writer of detective and thriller stories.