"Saturday. San Remo. Station platform. Give the porter of the Ambassadeurs-Palace ten francs for the loan of his cap. The three gents arrive. They speak to me. Explain to them that a lady traveller, Mme. Mergy, is going on to Genoa, to the Hotel Continental. The gents hesitate. M. Nicole wants to get out. The others hold him back. The train starts. Good luck, gents! An hour later, I take the train for France and get out at Nice, to await fresh orders."

Jacob closed his note-book and concluded:

"That's all. To-day's doings will be entered this evening."

"You can enter them now, M. Jacob. '12 noon. M. Daubrecq sends me to the Wagon-Lits Co. I book two berths in the Paris sleeping-car, by the 2.48 train, and send them to M. Daubrecq by express messenger. Then I take the 12.58 train for Vintimille, the frontier-station, where I spend the day on the platform watching all the travellers who come to France. Should Messrs. Nicole, Growler and Masher take it into their heads to leave Italy and return to Paris by way of Nice, my instructions are to telegraph to the headquarters of of police that Master Arsene Lupin and two of his accomplices are in train number so-and-so."

While speaking, Daubrecq led Jacob to the door. He closed it after him, turned the key, pushed the bolt and, going up to Clarisse, said:

"And now, darling, listen to me.

This time, she uttered no protest. What could she do against such an enemy, so powerful, so resourceful, who provided for everything, down to the minutest details, and who toyed with his adversaries in such an airy fashion? Even if she had hoped till then for Lupin's interference, how could she do so now, when he was wandering through Italy in pursuit of a shadow?

She understood at last why three telegrams which she had sent to the Hotel Franklin had remained unanswered. Daubrecq was there, lurking in the dark, watching, establishing a void around her, separating her from her comrades in the fight, bringing her gradually, a beaten prisoner, within the four walls of that room.

She felt her weakness. She was at the monster's mercy. She must be silent and resigned.

He repeated, with an evil delight:

"Listen to me, darling. Listen to the irrevocable words which I am about to speak. Listen to them well. It is now 12 o'clock. The last train starts at 2.48: you understand, the last train that can bring me to Paris to-morrow, Monday, in time to save your son. The evening-trains would arrive too late. The trains-de-luxe are full up. Therefore I shall have to start at 2.48. Am I to start?"

"Yes."

"Our berths are booked. Will you come with me?"

"Yes."

"You know my conditions for interfering?"

"Yes."

"Do you accept them?"

"Yes."

"You will marry me?"

"Yes."

Oh, those horrible answers! The unhappy woman gave them in a sort of awful torpor, refusing even to understand what she was promising. Let him start first, let him snatch Gilbert from the engine of death whose ision haunted her day and night... And then... and then... let what must come come... "

Holmes sat for some time in silent thought. He had lit the oldest and foulest of his pipes.

“I am not clear yet what you want me to do in this matter, Mr. Mason,” he said at last. “Can’t you make it more definite?”

“Perhaps this will make it more definite, Mr. Holmes,” said our visitor.

He took a paper from his pocket, and, unwrapping it carefully, he exposed a charred fragment of bone.

Holmes examined it with interest.

“Where did you get it?”

“There is a central heating furnace in the cellar under Lady Beatrice’s room. It‘s been off for some time, but Sir Robert complained of cold and had it on again.

Harvey runs it — he’s one of my lads. This very morning he came to me with this which he found raking out the cinders. He didn’t like the look of it.”

“Nor do I,” said Holmes. “What do you make of it, Watson?”

It was burned to a black cinder, but there could be no question as to its anatomical significance.

“It’s the upper condyle of a human femur,” said I.

“Exactly!” Holmes had become very serious. “When does this lad tend to the furnace?”

“He makes it up every evening and then leaves it.”

“Then anyone could visit it during the night?”

“Yes, sir.”

“Can you enter it from outside?”

“There is one door from outside. There is another which leads up by a stair to the passage in which Lady Beatrice’s room is situated.”

“These are deep waters, Mr. Mason; deep and rather dirty. You say that Sir Robert was not at home last night?”

“No, sir.”

“Then, whoever was burning bones, it was not he.”

“That’s true, sir.”

“What is the name of that inn you spoke of?”

“The Green Dragon.”

“Is there good fishing in that part of Berkshire?” The honest trainer showed very clearly upon his face that he was convinced that yet another lunatic had come into his harassed life.

“Well, sir, I’ve heard there are trout in the mill-stream and pike in the Hall lake.”

“That’s good enough. Watson and I are famous fishermen — are we not, Watson? You may address us in future at the Green Dragon. We should reach it to-night. I need not say that we don’t want to see you, Mr. Mason, but a note will reach us, and no doubt I could find you if I want you. When we have gone a little farther into the matter I will let you have a considered opinion.”

Thus it was that on a bright May evening Holmes and I found ourselves alone in a first-class carriage and bound for the little “halt-on-demand” station of Shoscombe. The rack above us was covered with a formidable litter of rods, reels, and baskets. On reaching our destination a short drive took us to an old-fashioned tavern, where a sporting host, Josiah Barnes, entered eagerly into our plans for the extirpation of the fish of the neighbourhood.