At three o'clock in the morning Groves, in a discarded dressing-gown of his master's, opened the front door and peered cautiously out into the darkness. Monsieur Louis, who was standing upon the door-step, pushed past him into the hall.

"Your master has sent me back to fetch some papers," he announced, displaying a bunch of keys. "I am sorry to disturb you like this, but the matter is important. Please bring me a cup of coffee into the library in half an hour."

Groves, who was sorely perplexed, stood with his back to the door which Monsieur Louis had approached.

"Really, sir," he answered, "I scarcely know what to say. I am afraid that I cannot allow you to interfere with any of my master's property in his absence."

Monsieur Louis held out the keys.

"Quite right!" he said. "It is an awkward situation, of course. Your master did not tell you the reason of his sudden departure, I suppose?"

"Not a word, sir."

"There can be no harm in telling you this much, at any rate," Monsieur Louis continued smoothly. "Your master, through no fault of his own, got mixed up in a very unpleasant affair in Paris, and he will have to appear in the courts there. I am his friend, and wish to do all that I can to help him. We have been talking the matter over, and I have strongly advised him to produce some papers which I think will help him materially. The police officer in whose charge he is would not allow him to return, so he handed me his keys and asked me to fetch them. I can assure you that I am your master's friend, and wish to do all that I can to help him. If he had not trusted me he would not have given me his keys, which no doubt you recognize."

Groves reluctantly stood on one side.

"I suppose I must let you in, sir," he said, "but I wish that the master had sent me a line."