"I found myself," he continued, "in the middle of a dense pine forest, with just sufficient clearing for two lines of rails and no more. There seemed to be nothing for me to do but to walk ahead in the direction which the train had taken. I lit a pipe and started out all right, but I very soon got tired. The sleepers were a long way apart, and the track between frightfully rough. I walked for hours without seeing the slightest sign of a station or a break in the woods, and finally I sat down dead beat. My feet were all blisters, and I felt that I couldn't walk another yard. Fortunately it was a warm night, and I made up my mind to crawl under the bracken just inside the wood and go to sleep. I found a comfortable place, and I'd just gone off when a noise close at hand woke me. I sat up and looked around.

"Within a few feet of me an engine and a single carriage had pulled up.

At intervals along the line as far as I could see soldiers were stationed like sentries. I could see that they were looking sharply up and down, and even a little way into the wood. From the train three or four men in long cloaks had already descended. They were standing in the track talking together."

For the first time Monsieur Grisson interrupted. He took his cigar from his mouth and leaned over towards the young Englishman.

"You were lost yourself. You did not accost them? Ask them the way anywhere?"

"It seems odd, I suppose, that I didn't," Guy answered, "but do you know there was an air of secrecy about the whole thing which rather frightened me. And those soldiers had exactly the air of looking for somebody to shoot. Anyhow, while I was hesitating what to do, there was a whistle and another train came from the opposite direction. Then, of course, I waited to see what was going to happen."

"And you saw?" the Duke began.

"I saw another single carriage arrive, more men in long cloaks and more soldiers. There was a brief but hearty greeting between two men, who seemed to be the princ.i.p.als in this little pantomime. Then they both got into the train which had arrived first, and I could see them sitting at a table talking, and a third man, who seemed to be a sort of secretary, was writing all the time. In about half an hour they both stepped back on to the line, and every one commenced shaking hands and saying good-bye. Then the whole thing seemed to melt away. The trains went on, the soldiers climbed into a truck attached to one of them, and everything was just as quiet as before."

"And afterwards?"

"I waited until it was clear daylight, and then I resumed my walk along the line. I found the next station about five miles off, and I was thankful to see that the guard of the train which had left me behind had had the sense to put my luggage out there. I went to the hotel and had some breakfast, and afterwards I chucked my idea of going so far as the frontier, and left for Vienna. A week later I was in Paris."

The Duke nodded.

"I have asked you this question before," he said "but Monsieur Grisson is anxious to hear it from your own lips. To how many people did you tell this little adventure of yours before you reached Paris?"

"To not a soul!" Guy answered. "I was very dull in Vienna. I found no one who could speak English and my few words of German did me no good at all. I came on to Paris within a week."

The Duke nodded.

"And in Paris for the first time!" he remarked. "You mentioned the affair?"

"Yes! I took up an ill.u.s.trated paper at a cafe on the night of my arrival whilst waiting for supper, and saw pictures of two men there who reminded me very much of the two whom I had seen on the railway near Pozen. I think I made some remark out loud which attracted the attention of a woman who was sitting at the next table, and later on I told her the whole story."

"And since then?"

"Since then I have told it to no one."

"Was there any one in the cafe you have spoken of who seemed to take any particular interest in you?"

Guy considered for a moment.

"There was a young lady from Vienna," he said, "who seemed to want to talk to me."

The two men exchanged glances.

"Madame has justified herself," the Duke murmured.

"She was trying to listen to what I was saying to the English girl--Mademoiselle Flossie, she called herself, and when she went away with her friends she threw me a note with two words on it--'_prenez garde!_' I know it struck me as being rather queer, because----"

He hesitated. The Duke nodded.

"Go on!" he said.

"Well, I may as well tell you everything," Guy continued, "even if it does sound rather like rot. All the time I was in Vienna and on the journey to Paris I fancied that I was being followed. I kept on seeing the same people, and a man who got in at Strasburg--I had seen him before at the hotel in Vienna--tried all he could to pal up to me. I hate Germans though, and I didn't like the look of the fellow, so I wouldn't have anything to say to him, though I feel sure he tipped the conductor to put him in my compartment. I gave him the slip at the railway station at Paris, but I'm almost sure I saw him that night at the Cafe Montmartre."

"Your story," Monsieur Grisson said quietly, "becomes more and more interesting. Monsieur le Duc here has hinted at some slight indiscretion of yours on the night of your arrival in Paris. I have some influence with the Government here, and I think I can promise you some very substantial help in return for the information you have given us. But I want you to turn your thoughts back to the night you spent by the railroad. Can you remember anything further about it, however trifling, which you have not told us?"

Guy leaned back in his chair and thought for a moment.

"By Jove," he declared, "there is something which I forgot altogether.

Just before that little party in the railway saloon broke up the chap in the car who had been writing left his seat, and a loose page of paper fluttered through the window."

The two men leaned across the table almost simultaneously.

"What became of it?" the Duke asked sharply.

"I picked it up and put it in my pocket," Guy answered.

"Did you read it?" the Duke asked.

"I couldn't! It was in German!"

"Where is it now?" Monsieur Grisson demanded.

Guy reflected. The faces of the two men amazed him. It was as though great things depended upon his answer.

"It is with my pocketbook and my letter of credit. I remember that I kept it as a curiosity."

"A curiosity!" the Duke exclaimed. "You have it here?"

Guy shook his head.

"It is in my portmanteau!" he answered.

The faces of the two men betrayed their disappointment. They conversed for a few moments in rapid French. Then the Duke turned to Guy.

"You do not object to our sending a trusted person to look through your portmanteau!" he asked. "Monsieur Grisson and I are very curious about that sheet of paper."

"Certainly not," Guy answered. "But may I not have my luggage here?"

The Duke shook his head.

"Not yet," he said. "It would not be wise. We must give Monsieur Grisson time to arrange your little affair."

"I don't want to seem a nuisance," Guy continued, "but about my sister?"

"She has been a.s.sured of your safety," the Duke declared. "For the rest we will talk later in the day. Monsieur Grisson and I are going to the telephone. You will find Henri on the terrace."

CHAPTER III