The conversation had developed into a duel between the detective and Anthony. Every one else in the room was conscious of the tension. It was a fight to a finish between the Frenchman, painfully in earnest, and the man who smoked so calmly and whose words seemed to show that he had not a care in the world.

“If I were you, Lemoine,” continued Anthony, “I should be very, very careful. Watch your step, and all that sort of thing.”

“This time,” said Lemoine grimly, “there will be no mistake.”

“You seem very sure about it all,” said Anthony. “But there’s such a thing as evidence, you know.”

Lemoine smiled, and something in his smile seemed to attract Anthony’s attention. He sat up and stubbed out his cigarette.

“You saw that note I wrote just now?” said the French detective. “It was to my people at the inn. Yesterday I received from France the fingerprints and the Bertillon measurements of King Victor—the so-called Captain O’Neill. I have asked for them to be sent up to me here. In a few minutes we shall know whether you are the man!”

Anthony stared steadily at him. Then a little smile crept over his face.

“You’re really rather clever, Lemoine. I never thought of that. The documents will arrive, you will induce me to dip my fingers in the ink, or something equally unpleasant, you will measure my ears and look for my distinguishing marks. And if they agree——”

“Well,” said Lemoine, “if they agree—eh?”

Anthony leaned forward in his chair.