The Classic Mystery Collection - Arthur Conan Doyle [4302]
Rouletabille coughed. It was evident to me that he was embarrassed. He had arrived at a point where he had to keep back his knowledge of Larsan's true motive. The explanation he had given had evidently been unsatisfactory. Rouletabille was quick enough to note the bad impression he had made, for, turning to the President, he said: "And now we come to the explanation of the Mystery of The Yellow Room!"
A movement of chairs in the court with a rustling of dresses and an energetic whispering of "Hush!" showed the curiosity that had been aroused.
"It seems to me," said the President, "that the Mystery of The Yellow Room, Monsieur Rouletabille, is wholly explained by your hypothesis. Frederic Larsan is the explanation. We have merely to substitute him for Monsieur Robert Darzac. Evidently the door of The Yellow Room was open at the time Monsieur Stangerson was alone, and that he allowed the man who was coming out of his daughter's chamber to pass without arresting him--perhaps at her entreaty to avoid all scandal."
"No, Monsieur President," protested the young man. "You forget that, stunned by the attack made on her, Mademoiselle Stangerson was not in a condition to have made such an appeal. Nor could she have locked and bolted herself in her room. You must also remember that Monsieur Stangerson has sworn that the door was not open."
"That, however, is the only way in which it can be explained. The Yellow Room was as closely shut as an iron safe. To use your own expression, it was impossible for the murderer to make his escape either naturally or supernaturally. When the room was broken into he was not there! He must, therefore, have escaped."
"That does not follow."
"What do you mean?"
"There was no need for him to escape--if he was not there!"
"Not there!"
"Evidently, not. He could not have been there, if he were not found there."
"But, what about the evidences of his presence?" asked the President.
"That, Monsieur President, is where we have taken hold of the wrong end. From the time Mademoiselle Stangerson shut herself in the room to the time her door was burst open, it was impossible for the murderer to escape. He was not found because he was not there during that time."
"But the evidences?"
"They have led us astray. In reasoning on this mystery we must not take them to mean what they apparently mean. Why do we conclude the murderer was there?--Because he left his tracks in the room? Good! But may he not have been there before the room was locked. Nay, he must have been there before! Let us look into the matter of these traces and see if they do not point to my conclusion.
"After the publication of the article in the 'Matin' and my conversation with the examining magistrate on the journey from Paris to Epinaysur-Orge, I was certain that The Yellow Room had been hermetically sealed, so to speak, and that consequently the murderer had escaped before Mademoiselle Stangerson had gone into her chamber at midnight.
"At the time I was much puzzled. Mademoiselle Stangerson could not have been her own murderer, since the evidences pointed