“Tell me the whole story in your own words,” I said, “omitting no detail, however apparently slight, for one never knows how important the most trivial detail may be.”

He inspected the photograph for a moment with growing gloom.

“All right,” he said. “This is what happened. You know my views about that steak-and-kidney pie.”

“Quite.”

“Well, round about one a.m. I thought the time was ripe. I stole from my room and went downstairs. The pie seemed to beckon me.”

I nodded. I knew how pies do.

“I got to the larder. I fished it out. I set it on the table. I found knife and fork. I collected salt, mustard, and pepper. There were some cold potatoes. I added those. And I was about to pitch in when I heard a sound behind me, and there was your aunt at the door. In a blue-and-yellow dressing gown.”

“Embarrassing.”

“Most.”

“I suppose you didn’t know where to look.”