“Yes, sir: there is no one that we cannot account for.”

“Well, it’s only a reasonable walk to Chatham. Anyone might stay there or take a train without being observed. This is the garden path of which I spoke, Mr. Holmes. I’ll pledge my word there was no mark on it yesterday.”

“On which side were the marks on the grass?”

“This side, sir. This narrow margin of grass between the path and the flowerbed. I can’t see the traces now, but they were clear to me then.”

“Yes, yes: someone has passed along,” said Holmes, stooping over the grass border. “Our lady must have picked her steps carefully, must she not, since on the one side she would leave a track on the path, and on the other an even clearer one on the soft bed?”

“Yes, sir, she must have been a cool hand.”

I saw an intent look pass over Holmes’s face.