“Doubtless,” said Tarzan, with a grim smile.

“He is down in the town now, or I should send for him,” continued Captain Gerard. “I shall tell him as soon as he returns.”

Tarzan let the officer think that he had been lost, wandering finally into the douar of Kadour ben Saden, who had escorted him back to Bou Saada. As soon as possible he bade the good officer adieu, and hastened back into the town. At the native inn he had learned through Kadour ben Saden a piece of interesting information. It told of a black-bearded white man who went always disguised as an Arab. For a time he had nursed a broken wrist. More recently he had been away from Bou Saada, but now he was back, and Tarzan knew his place of concealment. It was for there he headed.

Through narrow, stinking alleys, black as Erebus, he groped, and then up a rickety stairway, at the end of which was a closed door and a tiny, unglazed window. The window was high under the low eaves of the mud building. Tarzan could just reach the sill. He raised himself slowly until his eyes topped it. The room within was lighted, and at a table sat Rokoff and Gernois. Gernois was speaking.

“Rokoff, you are a devil!” he was saying. “You have hounded me until I have lost the last shred of my honor. You have driven me to murder, for the blood of that man Tarzan is on my hands. If it were not that that other devil’s spawn, Paulvitch, still knew my secret, I should kill you here tonight with my bare hands.”

Rokoff laughed. “You would not do that, my dear lieutenant,” he said. “The moment I am reported dead by assassination that dear Alexis will forward to the minister of war full proof of the affair you so ardently long to conceal; and, further, will charge you with my murder. Come, be sensible. I am your best friend. Have I not protected your honor as though it were my own?”

Gernois sneered, and spat out an oath.

“Just one more little payment,” continued Rokoff, “and the papers I wish, and you have my word of honor that I shall never ask another cent from you, or further information.”

“And a good reason why,” growled Gernois. “What you ask will take my last cent, and the only valuable military secret I hold. You ought to be paying me for the information, instead of taking both it and money, too.”

“I am paying you by keeping a still tongue in my head,” retorted Rokoff. “But let’s have done. Will you, or will you not? I give you three minutes to decide. If you are not agreeable I shall send a note to your commandant tonight that will end in the degradation that Dreyfus suffered—the only difference being that he did not deserve it.”