"I do not now say that she is," said Hanaud. "But the Juge d'instruction here has already sent to me to ask for my assistance, and I refused. I replied that I was just a good bourgeois enjoying his holiday. Still it is difficult quite to forget one's profession. It was the Commissaire of Police who came to me, and naturally I talked with him for a little while. The case is dark, monsieur, I warn you." "How dark?" asked Harry Wethermill. "I will tell you," said Hanaud, drawing his chair still closer to the young man. "Understand this in the first place. There was an accomplice within the villa. Some one let the murderers in. There is no sign of an entrance being forced; no lock was picked, there is no mark of a thumb on any panel, no sign of a bolt being forced. There was an accomplice within the house. We start from that." Wethermill nodded his head sullenly. Ricardo drew his chair up towards the others. But Hanaud was not at that moment interested in Ricardo. "Well, then, let us see who there are in Mme. Dauvray's household. The list is not a long one. It was Mme. Dauvray's habit to take her luncheon and her dinner at the restaurants, and her maid was all that she required to get ready her 'petit dejeuner' in the morning and her 'sirop' at night. Let us take the members of the household one by one. There is first the chauffeur, Henri Servettaz. He was not at the villa last night. He came back to it early this morning." "Ah!" said Ricardo, in a significant exclamation. Wethermill did not stir. He sat still as a stone, with a face deadly white and eyes burning upon Hanaud's face.