I don’t know if it has ever occurred to you, but to the thoughtful cove there is something dashed reassuring in all the reports of burglaries you read in the papers. I mean, if you’re keen on Great Britain maintaining her prestige and all that. I mean, there can’t be much wrong with the morale of a country whose sons go in to such a large extent for housebreaking, because you can take it from me that the job requires a nerve of the most cast-iron description. I suppose I was walking up and down in front of that house for half an hour before I could bring myself to dash in at the front gate and slide round to the side where the study-window was. And even then I stood for about ten minutes cowering against the wall and listening for police-whistles.

Eventually, however, I braced myself up and got to business. The study was on the ground floor and the window was nice and large, and, what is more, wide open. I got the old knee over the sill, gave a jerk which took an inch of skin off my ankle, and hopped down into the room. And there I was, if you follow me.

I stood for a moment, listening. Everything seemed to be all right. I was apparently alone in the world.