"Quite alone."
"But there must have been other people here. Did they come down the stairs past you?"
"No, sir; they must have escaped by that window. It was open—"
The commissary looked at the police-officer, who nodded intelligently.
"I had already noticed it, Mr. Commissary. The window gives upon a low roof, which communicates with the back street. Escape would be quite easy from that side."
"Well," said the commissary, "and you found this gentleman? Do you know him? His name? Have you ever seen him before?"
"He is M. le Baron d'Enot; he is a constant visitor at the house. Very fortunate, I believe, and I heard he won largely last night."
"Ah!" said the commissary. This fact was important, as affording a reason for the crime. "And do you suspect any one? Have you any idea who was here at the last?"
"I scarcely noticed the gentlemen as they went away; it would be impossible for me, therefore, to say who remained."
"Then there is no clue—"