Trevor nodded. This had happened on the Sunday of that week.
“Well, I wanted to look at the post-marks.”
“By Jove, I never thought of that.”
Milton continued with the business-like air of the detective who explains in the last chapter of the book how he did it.
“I found, as I thought, that both letters came from the same place.”
Trevor pulled out the letters in question. “So they do,” he said, “Chesterton.”
“Do you know Chesterton?” asked Milton.
“Only by name.”
“It’s a small hamlet about two miles from here across the downs. There’s only one shop in the place, which acts as post-office and tobacconist and everything else. I thought that if I went there and asked about those letters, they might remember who it was that sent them, if I showed them a photograph.”
“By Jove,” said Trevor, “of course! Did you? What happened?”