"If you strangle me I can't tell anything. Get back into bed, Diana! I don't know whether it was really important, but it may have been. It happened when I was quite a little girl. I had a slight attack of measles, and of course I was kept in bed. Mother was nursing me, and one afternoon she went out to do some shopping and left me to have a nap. I wasn't sleepy in the least, and it was horribly dull staying there all by myself. I remembered a book I wanted to read which was in the dining-room bookcase, so I did a most dreadfully naughty thing: I jumped up, put on my dressing-gown and bedroom slippers, and ran downstairs to fetch _At the Back of the North Wind_. I opened the dining-room door and marched in, and then I got a surprise, for seated in a chair by the fire was a stranger. He looked as much surprised as I was.