"You must be a good friend to that young girl, M. Ricardo," he said. "Let us drive to your hotel." "Yes," said Ricardo. And as they went the curiosity which all the way from Geneva had been smouldering within him burst into flame. "Will you explain to me one thing?" he asked. "When the scream came from the garden you were not surprised. Indeed, you said that when you saw the open door and the morphia-needle on the table of the little room downstairs you thought Adele and the man Hippolyte were hiding in the garden." "Yes, I did think so." "Why? And why did the publication that the jewels had been discovered so alarm you?" "Ah!" said Hanaud. "Did not you understand that? Yet it is surely clear and obvious, if you once grant that the girl was innocent, was a witness of the crime, and was now in the hands of the criminals. Grant me those premisses, M. Ricardo, for a moment, and you will see that we had just one chance of finding the girl alive in Geneva. From the first I was sure of that. What was the one chance? Why, this! She might be kept alive on the chance that she could be forced to tell what, by the way, she did not know, namely, the place where Mme. Dauvray's valuable jewels were secreted. Now, follow this. We, the police, find the jewels and take charge of them. Let that news reach the house in Geneva, and on the same night Mlle. Celie loses her life, and not--very pleasantly. They have no further use for her. She is merely a danger to them. So I take my precautions--never mind for the moment what they were. I take care that if the murderer is in Aix and gets wind of our discovery he shall not be able to communicate his news." "The Post Office would have stopped letters or telegrams," said Ricardo. "I understand." "On the contrary," replied Hanaud. "No, I took my precautions, which were of quite a different kind, before I knew the house in Geneva or the name of Rossignol. But one way of communication I did not think of. I did not think of the possibility that the news might be sent to a newspaper, which of course would publish it and cry it through the streets of Geneva. The moment I heard the news I knew we must hurry. The garden of the house ran down to the lake. A means of disposing of Mlle. Celie was close at hand. And the night had fallen. As it was, we arrived just in time, and no earlier than just in time. The paper had been bought, the message had reached the house, Mlle. Celie was no longer of any use, and every hour she stayed in that house was of course an hour of danger to her captors." "What were they going to do?" asked Ricardo. Hanaud shrugged his shoulders.