"Everything's all right," he said when he returned, "and you can be easy.
Good-night."
"Good-night," said the engineer, seeing Perenna and Mazeroux out.
Between his study and the passage were two doors, one of which was padded and covered with oilcloth. On the other side, the passage was separated from the hall by a heavy curtain.
"You can go to sleep," said Perenna to his companion. "I'll sit up."
"But surely, Chief, you don't think that anything's going to happen!"
"I don't think so, seeing the precautions which we've taken. But, knowing Inspector Vérot as you did, do you think he was the man to imagine things?"
"No, Chief."
"Well, you know what he prophesied. That means that he had his reasons for doing so. And therefore I shall keep my eyes open."
"We'll take it in turns, Chief; wake me when it's my time to watch."
Seated motionlessly, side by side, they exchanged an occasional remark. Soon after, Mazeroux fell asleep. Don Luis remained in his chair without moving, his ears pricked up. Everything was quiet in the house. Outside, from time to time, the sound of a motor car or of a cab rolled by. He could also hear the late trains on the Auteuil line.