“Did you post that letter yourself?”
The nobleman’s reply was interrupted by his secretary, who broke in with some heat.
“His Grace is not in the habit of posting letters himself,” said he. “This letter was laid with others upon the study table, and I myself put them in the postbag.”
“You are sure this one was among them?”
“Yes, I observed it.”
“How many letters did your Grace write that day?”
“Twenty or thirty. I have a large correspondence. But surely this is somewhat irrelevant?”
“Not entirely,” said Holmes.
“For my own part,” the Duke continued, “I have advised the police to turn their attention to the south of France. I have already said that I do not believe that the Duchess would encourage so monstrous an action, but the lad had the most wrongheaded opinions, and it is possible that he may have fled to her, aided and abetted by this German. I think, Dr. Huxtable, that we will now return to the Hall.”
I could see that there were other questions which Holmes would have wished to put, but the nobleman’s abrupt manner showed that the interview was at an end. It was evident that to his intensely aristocratic nature this discussion of his intimate family affairs with a stranger was most abhorrent, and that he feared lest every fresh question would throw a fiercer light into the discreetly shadowed corners of his ducal history.
When the nobleman and his secretary had left, my friend flung himself at once with characteristic eagerness into the investigation.