And, suddenly, Lupin remembered: two years ago, Prasville and Daubrecq the deputy had had a personal encounter on the Place du Palais-Bourbon. The incident made a great stir at the time. No one knew the cause of it. Prasville had sent his seconds to Daubrecq on the same day; but Daubrecq refused to fight.

A little while later, Prasville was appointed secretary-general.

"Very odd, very odd," said Lupin, who remained plunged in thought, while continuing to observe Prasvile's movements.

At seven o'clock Prasville's group of men moved away a few yards, in the direction of the Avenue Henri-Martin. The door of a small garden on the right of the house opened and Daubrecq appeared. The two detectives followed close behind him and, when he took the Rue-Taitbout train, jumped on after him.

Prasville at once walked across the square and rang the bell. The garden-gate was between the house and the porter's lodge. The portress came and opened it. There was a brief conversation, after which Prasville and his companions were admitted.

"A domiciliary visit," said Lupin. "Secret and illegal. By the strict rules of politeness, I ought to be invited. My presence is indispensable."

Without the least hesitation he went up to the house, the door of which had not been closed, and, passing in front of the the portress, who was casting her eyes outside, he asked, in the hurried tones of a person who is late for an appointment:

"Have the gentlemen come?"

"Yes, you will find them in the study."

His plan was quite simple: if any one met him, he would pretend to be a tradesman. But there was no need for this subterfuge. He was able, after crossing an empty hail, to enter a dining-room which also had no one in it, but which, through the panes of a glass partition that separated the dining-room from the study, afforded him a view of Prasville and his five companions.

Prasville opened all the drawers with the aid of false keys. Next, he examined all the papers, while his companions took down the books from the shelves, shook the pages of each separately and felt inside the bindings.

"Of course, it's a paper they're looking for," said Lupin. "Bank-notes, perhaps... "

Prasville exclaimed:

"Whatrot! We shan't find a thing!"

Yet he obviously did not abandon all hope of discovering what he wanted, for he suddenly seized the four bottles in a liqueur-stand, took out the four stoppers and inspected them.

"Hullo!" thought Lupin. "Now he's going for decanter-stoppers! Then it's not a question of a paper? Well, I give it up."

Prasville next lifted and examined different objects; and he asked:

"How often have you been here?"

"Six times last winter," was the reply.

"And you have searched the house thoroughly?"

"Every one of the rooms, for days at a time, while he was visiting his constituency."

"Still... still ... ." And he added, "Has he no servant at present?"

"No, he is looking for one. He has his meals out and the portress keeps the house as best she can. The woman is devoted to us... "

“ ‘I thought you might run short in the night-time, sir. It is bitter weather and these rooms are cold.’

“He hesitated before leaving the room, and when I looked round he was standing facing me with a wistful look upon his wrinkled face.

“ ‘Beg your pardon, sir, but I could not help hearing what you said of young Master Godfrey at dinner. You know, sir, that my wife nursed him, and so I may say I am his foster-father. It’s natural we should take an interest. And you say he carried himself well, sir?’

“ ‘There was no braver man in the regiment. He pulled me out once from under the rifles of the Boers, or maybe I should not be here.’

“The old butler rubbed his skinny hands.

“ ‘Yes, sir, yes, that is Master Godfrey all over. He was always courageous. There’s not a tree in the park, sir, that he has not climbed. Nothing would stop him. He was a fine boy — and oh, sir, he was a fine man.’

“I sprang to my feet.

“ ‘Look here!’ I cried. ‘You say he was. You speak as if he were dead. What is all this mystery? What has become of Godfrey Emsworth?’

“I gripped the old man by the shoulder, but he shrank away.

“ ‘I don’t know what you mean, sir. Ask the master about Master Godfrey. He knows. It is not for me to interfere.’

“He was leaving the room, but I held his arm

“ ‘Listen,’ I said. ‘You are going to answer one question before you leave if I have to hold you all night. Is Godfrey dead?”

“He could not face my eyes. He was like a man hypnotized The answer was dragged from his lips. It was a terrible and unexpected one.

“ ‘I wish to God he was!’ he cried, and, tearing himself free he dashed from the room.

“You will think, Mr. Holmes, that I returned to my chair in no very happy state of mind. The old man’s words seemed to me to bear only one interpretation. Clearly my poor friend had become involved in some criminal or, at the least, disreputable transaction which touched the family honour. That stern old man had sent his son away and hidden him from the world lest some scandal should come to light. Godfrey was a reckless fellow. He was easily influenced by those around him. No doubt he had fallen into bad hands and been misled to his ruin. It was a piteous business, if it was indeed so, but even now it was my duty to hunt him out and see if I could aid him. I was anxiously pondering the matter when I looked up, and there was Godfrey Emsworth standing before me.”

My client had paused as one in deep emotion.

“Pray continue,” I said. “Your problem presents some very unusual features.”

“He was outside the window, Mr. Holmes, with his face pressed against the glass. I have told you that I looked out at the night. When I did so I left the curtains partly open. His figure was framed in this gap. The window came down to the ground and I could see the whole length of it, but it was his face which held my gaze. He was deadly pale — never have I seen a man so white. I reckon ghosts may look like that; but his eyes met mine, and they were the eyes of a living man. He sprang back when he saw that I was looking at him, and he vanished into the darkness.