"Well," he said, "tell us now who it was that sent you to the Turks with the diamonds?"

"It was Le Jongleur, Henri Dubois."

"What?" cried the commissary, starting violently. "Henri Dubois! The most expert thief in France! A scoundrel against whom the police have vainly tried for years to secure evidence."

"I know nothing of that, monsieur," said the little man, who seemed to be strangely crestfallen, "but I am telling you the truth this time. It was he who sent me the day before yesterday to the Rue Barbette, and again yesterday, although I was very unwilling to go the second time, because, as this gentleman will tell you, they looked very like murdering me on the first occasion."

"What was the object of your visit yesterday?" said Brett.

"There, monsieur, I have told you the truth, although monsieur the commissary here thinks it was childish. My instructions really were to ask them to meet him on the Pont Neuf at 6.30 p.m., when he said he would explain everything to their satisfaction. But, above all, I was to warn them to beware of the Englishman."

"Then, why should they seize and gag you for conveying such a simple message?" demanded the commissary.

"I cannot tell. I have done them no harm. Believe me, gentlemen both, I have not the slightest idea how these diamonds were obtained, or why there should be such a fuss about them. All I know is that these Turks are desperate fellows, and you won't catch me going near them again, I swear."

"How long have you known Dubois?" said Brett.

"Oh, two years more or less."