Some days later, I learned from Frédéric Larsan—who, like ourselves, was surprised and mystified by his appearance and reception at the château—that Mr. Rance had been an inebriate for about fifteen years only; that is to say, since the professor and his daughter left Philadelphia. During the time the Stangersons lived in America they were very intimate with Arthur Rance, who was one of the most distinguished phrenologists of the new world. Owing to new experiments, he had made enormous strides beyond the science of Gall and Lavater. The friendliness with which he was received at the Glandier may be explained by the fact that he had rendered Mademoiselle Stangerson a great service by stopping, at the peril of his own life, the runaway horses of her carriage. The immediate result of that could, however, have been no more than a mere friendly association with the Stangersons; certainly, not a love affair. Frédéric Larsan did not tell me where he had picked up this information; but he appeared to be quite sure of what he said. Had we known these facts at the time Arthur Rance met us at the Donjon Inn, his presence at the château might not have puzzled us, but they could not have failed to increase our interest in the man himself. The American must have been at least forty-five years old. He spoke in a perfectly natural tone in reply to Rouletabille’s question. “I put off my return to America when I heard of the attack on Mademoiselle Stangerson. I wanted to be certain the lady had not been killed, and I shall not go away until she is perfectly recovered.” Arthur Rance then took the lead in talk, paying no heed to some of Rouletabille’s questions. He gave us, without our inviting him, his personal views on the subject of the tragedy,—views which, as well as I could make out, were not far from those held by Frédéric Larsan. The American also thought that Robert Darzac had something to do with the matter. He did not mention him by name, but there was no room to doubt whom he meant. He told us he was aware of the efforts young Rouletabille was making to unravel the tangled skein of The Yellow Room mystery. He explained that Monsieur Stangerson had related to him all that had taken place in the inexplicable gallery. He several times expressed his regret at Monsieur Darzac’s absence from the château on all these occasions, and thought that Monsieur Darzac had done cleverly in allying himself with Monsieur Joseph Rouletabille, who could not fail, sooner or later, to discover the murderer. He spoke the last sentence with unconcealed irony. Then he rose, bowed to us, and left the inn. Rouletabille watched him through the window. “An odd fish, that!” he said. “Do you think he’ll pass the night at the Glandier?” I asked. To my amazement the young reporter answered that it was a matter of entire indifference to him whether he did or not.