"That is very easily done," I answered; "the Duke is going to have his hair cut, and I am going to witness the atrocity. You may expect to see him return not unlike that man with the guitar in the boat this morning."

"By the way," said Glenbarth, "that reminds me that I was going to point out a curious thing to you concerning that man. Did you notice, Miss Trevor, that when we were alone together in the balcony he did not once touch his instrument, but directly Hatteras and Lady Hatteras arrived, he jumped up and began to play?"

This confirmed my suspicions. I had quite come to the conclusion by this time that the man had only made his appearance before the hotel in order to be certain of my address. Yet, I had to ask myself, if he were in Nikola's employ, why should he have been anxious to do so?

An hour later the ladies departed on their polite errand, and the Duke and I were left together. He was not what I should call a good companion. He was in an irritable mood, and nothing I could do or say seemed to comfort him. I knew very well what was the matter, and when we had exhausted English politics, the rise and fall of Venice, Ruskin, and the advantages of foreign travel, I mentioned incidentally the name of Miss Trevor. The frown vanished from his face, and he answered like a coherent mortal.

"Look here, Hatteras," he said, with a fine burst of confidence, "you and I have been friends for a good many years, and I think we know each other about as well as two men can do."

"That is so," I answered, wondering what he was driving at; "we have been through some strange adventures together, and should certainly know each other. I hope that you are not going to propose that we should depart on some harum-scarum expedition like that you wanted me to join you in last year, to the Pamirs, was it not? If so, I can tell you once and for all that my lady won't hear of it."

"Confound the Pamirs!" he replied angrily. "Is it likely that I should think of going there just now? You misunderstand my meaning entirely. What I want is a sympathetic friend, who can enter into my troubles, and if possible help me out of them."

For the life of me I could not forbear from teasing him for a little longer.

"My dear old fellow," I said, "you know that I will do anything I possibly can to help you. Take my advice and get rid of the man at once. As I told you in my letter to you before you left England, it is only misplaced kindness to keep him on. You know very well that he has been unfaithful to you for some years past. Then why allow him to continue in his wrong-doing? The smash will come sooner or later."

"What do you mean?" he asked.