"His love for you—his dislike for your husband——"
Moira flushed painfully. "I have told you the truth of this matter because I believe that only by knowing the whole truth will you be able to solve this mystery. If Monsieur Horton tells you that the studio was empty, he tells you what he believes to be the truth. Why, otherwise, would he lie about a situation which must surely condemn him?"
"We have thought of all that, Madame," said Monsieur Simon, "and I am willing to admit that there are several points in his testimony which are very puzzling. We have only finished his examination and that of Madame Morin, which have lasted the greater part of the morning. Both he and Madame Morin have repeated without the slightest divergence the testimony taken in the preliminary examination at the scene of the crime. I am glad to say also that their statements confirm in a general way your own in regard to what has happened in the affair of the Duc de Vautrin. The entire department of Police is now upon a search for Monsieur Barry Quinlevin and the man named Tricot, who will, of course, be given the opportunity to explain where they were last night at eight o'clock. An agent goes at once to Fontainebleau. But that does not exonerate Monsieur Horton or Madame Morin. A man has been killed in a room from which the murderer could not have emerged without detection. The door to the sleeping apartments was locked, the key on the outside, the window was sixty feet from the stone flagging below. The window and wall were carefully studied this morning after daybreak. The murderer could not have climbed down. It is impossible. Monsieur Horton admits that he did not escape by the stair. How then did he escape? The doors have been guarded. He is not there now nor did Monsieur Horton discover him either before or after the murder——"
"And yet he was there, Monsieur Simon——" said Moira, her voice gathering strength and clearness from the depth of her faith and conviction. "He was there, Monsieur le Commissaire," she repeated, "all the time. Nothing else is possible."
Monsieur Matthieu tapped his eyeglasses upon the palm of his hand.
"I should be very willing to believe you, Madame," he said, with polite scepticism, "had I not ocular demonstration that there could have been no one in the room at any moment between the arrival of Monsieur Horton and Madame Morin and the alarm given by Monsieur Horton himself. I have not yet exhausted every avenue of investigation, but I need not conceal from you the extreme danger of the position in which Monsieur Horton finds himself. We have a motive for the crime. Even you, Madame, have only added testimony as to that. With his brother dead, there was no obstacle to your unfortunate affection——"
"Monsieur——!" Moira had drawn back from him in dismay, her face blanched again.
"If I seem cruel, I only speak with the cold logic of the professional analyst of human motives. The fact that you are a Catholic and opposed to divorce only provides another reason why your husband should be removed from the path of Monsieur Horton——"
Everything that Moira had said seemed to be weaving more tightly the skein of evidence around the man she loved. And this thinking machine in the eyeglasses, grasped only at the threads that seemed to incriminate him. And what of the other evidence that she had presented—would they disregard that? She was trying to think clearly, connectedly, and presently managed to put her thoughts into words.
"Have you discovered how or why Monsieur Jim Horton happened to be at the studio and why if he was bent upon the murder of his own brother he took Madame Morin as a witness——"