“Sorry to keep you waiting, Mr. Holmes, I can see that you are bored to death with the whole affair. Well, he has confessed, all right. Come in here, MacPherson. Let these gentlemen hear of your most inexcusable conduct.”

The big constable, very hot and penitent, sidled into the room.

“I meant no harm, sir, I’m sure. The young woman came to the door last evening⁠—mistook the house, she did. And then we got talking. It’s lonesome, when you’re on duty here all day.”

“Well, what happened then?”