The narratives of Watson have accustomed the reader, no doubt, to the fact that I do not waste words or disclose my thoughts while a case is actually under consideration. Dodd seemed surprised, but nothing more was said, and the three of us continued our journey together. In the train I asked Dodd one more question which I wished our companion to hear.

“You say that you saw your friend’s face quite clearly at the window, so clearly that you are sure of his identity?”

“I have no doubt about it whatever. His nose was pressed against the glass. The lamplight shone full upon him.”

“It could not have been someone resembling him?”

“No, no, it was he.”

“But you say he was changed?”

“Only in colour. His face was⁠—how shall I describe it?⁠—it was of a fish-belly whiteness. It was bleached.”