Well, it started off slow; my experience with the author AA Milne is, of course, Winnie the Pooh. This is totally different :-).
When I finally got into the fact that this was a mystery, and not a children's book, I started totally enjoying it. It was clever and surprising. He drew from the Sherlock Holmes idea a lot, even to the extent that one of the characters was playfully referred to as "Watson", and the twists and misleading aspects were engaging and startling. Who would ever have guessed that he was so diverse…