He entered, one of the rooms and approached a window through which came a feeble light from the outside. On looking through the window he saw the man, who had no doubt descended by another stairway and escaped by another door. The man was threading his way through the shrubbery which bordered the wall that separated the two gardens.
"The deuce!" exclaimed Sholmes, "he is going to escape."
He hastened down the stairs and leaped over the steps in his eagerness to cut off the man's retreat. But he did not see anyone, and, owing to the darkness, it was several seconds before he was able to distinguish a bulky form moving through the shrubbery. This gave the Englishman food for reflection. Why had the man not made his escape, which he could have done so easily? Had he remained in order to watch the movements of the intruder who had disturbed him in his mysterious work?
"At all events," concluded Sholmes, "it is not Lupin; he would be more adroit. It may be one of his men."
For several minutes Herlock Sholmes remained motionless, with his gaze fixed on the adversary who, in his turn was watching the detective. But as that adversary had become passive, and as the Englishman was not one to consume his time in idle waiting, he examined his revolver to see if it was in good working order, remove his knife from its sheath, and walked toward the enemy with that cool effrontery and scorn of danger for which he had become famous.
He heard a clicking sound; it was his adversary preparing his revolver. Herlock Sholmes dashed boldly into the thicket, and grappled with his foe. There was a sharp, desperate struggle, in the course of which Sholmes suspected that the man was trying to draw a knife. But the Englishman, believing his antagonist to be an accomplice of Arsène Lupin and anxious to win the first trick in the game with that redoubtable foe, fought with unusual strength and determination. He hurled his adversary to the ground, held him there with the weight of his body, and, gripping him by the throat with one hand, he used his free hand to take out his electric lantern, press the button, and throw the light over the face of his prisoner.
"Wilson!" he exclaimed, in amazement.
"Herlock Sholmes!" stammered a weak, stifled voice.
For a long time they remained silent, astounded, foolish. The shriek of an automobile rent the air. A slight breeze stirred the leaves. Suddenly, Herlock Sholmes seized his friend by the shoulders and shook him violently, as he cried:
"What are you doing here? Tell me.... What?... Did I tell you to hide in the bushes and spy on me?"
"Spy on you!" muttered Wilson, "why, I didn't know it was you."
"But what are you doing here? You ought to be in bed."
"I was in bed."
"You ought to be asleep."
"I was asleep."
"Well, what brought you here?" asked Sholmes.
"Your letter."
"My letter? I don't understand."
"Yes, a messenger brought it to me at the hotel."
"From me? Are you crazy?"
"It is true—I swear it."
"Where is the letter?"
Wilson handed him a sheet of paper, which he read by the light of his lantern. It was as follows:
"Wilson, come at once to avenue Henri-Martin. The house is empty. Inspect the whole place and make an exact plan. Then return to hotel.—Herlock Sholmes."
"I was measuring the rooms," said Wilson, "when I saw a shadow in the garden. I had only one idea——"
"That was to seize the shadow.... The idea was excellent.... But remember this, Wilson, whenever you receive a letter from me, be sure it is my handwriting and not a forgery."
"Ah!" exclaimed Wilson, as the truth dawned on him, "then the letter wasn't from you?"
"No."
"Who sent it, then?"
"Arsène Lupin."
"Why? For what purpose?" asked Wilson.
"I don't know, and that's what worries me. I don't understand why he took the trouble to disturb you. Of course, if he had sent me on such a foolish errand I wouldn't be surprised; but what was his object in disturbing you?"
"I must hurry back to the hotel."
"So must I, Wilson."
They arrived at the gate. Wilson, who was ahead, took hold of it and pulled.
"Ah! you closed it?" he said.
"No, I left it partly open."
Sholmes tried the gate; then, alarmed, he examined the lock. An oath escaped him:
"Good God! it is locked! locked with a key!"
He shook the gate with all his strength; then, realizing the futility of his efforts, he dropped his arms, discouraged, and muttered, in a jerky manner:
"I can see it all now—it is Lupin. He fore-saw that I would leave the train at Creil, and he prepared this neat little trap for me in case I should commence my investigation this evening. Moreover, he was kind enough to send me a companion to share my captivity. All done to make me lose a day, and, perhaps, also, to teach me to mind my own business."
"Do you mean to say we are prisoners?"
"Exactly. Herlock Sholmes and Wilson are the prisoners of Arsène Lupin. It's a bad beginning; but he laughs best who laughs last."
Wilson seized Sholmes' arm, and exclaimed:
"Look!... Look up there!... A light...."
A light shone through one of the windows of the first floor. Both of them ran to the house, and each ascended by the stairs he had used on coming out a short time before, and they met again at the entrance to the lighted chamber. A small piece of a candle was burning in the center of the room. Beside it there was a basket containing a bottle, a roasted chicken, and a loaf of bread.
Sholmes was greatly amused, and laughed heartily.
"Wonderful! we are invited to supper. It is really an enchanted place, a genuine fairy-land. Come, Wilson, cheer up! this is not a funeral. It's all very funny."
"Are you quite sure it is so very funny?" asked Wilson, in a lugubrious tone.
"Am I sure?" exclaimed Sholmes, with a gaiety that was too boisterous to be natural, "why, to tell the truth, it's the funniest thing I ever saw. It's a jolly good comedy! What a master of sarcasm this Arsène Lupin is! He makes a fool of you with the utmost grace and delicacy. I wouldn't miss this feast for all the money in the Bank of England. Come, Wilson, you grieve me. You should display that nobility of character which rises superior to misfortune. I don't see that you have any cause for complaint, really, I don't."
After a time, by dint of good humor and sarcasm, he managed to restore Wilson to his normal mood, and make him swallow a morsel of chicken and a glass of wine. But when the candle went out and they prepared to spend the night there, with the bare floor for a mattress and the hard wall for a pillow, the harsh and ridiculous side of the situation was impressed upon them. That particular incident will not form a pleasant page in the memoirs of the famous detective.
Next morning Wilson awoke, stiff and cold. A slight noise attracted his attention: Herlock Sholmes was kneeling on the floor, critically examining some grains of sand and