"No, he never leaves the castle.-Sometimes, in his motor, at night, so they say. The marketing is done by an old cook, who talks to n.o.body. They are queer people-"

"Do you think your client would consent to sell his castle?"

"I don't think so. It's an historic castle, built in the purest Louis XIII. style. My client was very fond of it; and, unless he has changed his mind-"

"Can you give me his name and address?"

"Louis Valmeras, 34, Rue du Mont-Thabor."

Beautrelet took the train for Paris at the nearest station. On the next day but one, after three fruitless calls, he at last found Louis Valmeras at home. He was a man of about thirty, with a frank and pleasing face. Beautrelet saw no need to beat about the bush, stated who he was and described his efforts and the object of the step which he was now taking:

"I have good reason to believe," he concluded, "that my father is imprisoned in the Chateau de l'Aiguille, doubtless in the company of other victims. And I have come to ask you what you know of your tenant, Baron Anfredi."

"Not much. I met Baron Anfredi last winter at Monte Carlo. He had heard by accident that I was the owner of the Chateau de l'Aiguille and, as he wished to spend the summer in France, he made me an offer for it."

"He is still a young man-"

"Yes, with very expressive eyes, fair hair-"

"And a beard?"

"Yes, ending in two points, which fall over a collar fastened at the back, like a clergyman's. In fact, he looks a little like an English parson."

"It's he," murmured Beautrelet, "it's he, as I have seen him: it's his exact description."

"What! Do you think-?"

"I think, I am sure that your tenant is none other than a.r.s.ene Lupin."

The story amused Louis Valmeras. He knew all the adventures of a.r.s.ene Lupin and the varying fortunes of his struggle with Beautrelet. He rubbed his hands:

"Ha, the Chateau de l'Aiguille will become famous!-I'm sure I don't mind, for, as a matter of fact, now that my mother no longer lives in it, I have always thought that I would get rid of it at the first opportunity. After this, I shall soon find a purchaser. Only-"

"Only what?"

"I will ask you to act with the most extreme prudence and not to inform the police until you are quite sure. Can you picture the situation, supposing my tenant were not a.r.s.ene Lupin?"

Beautrelet set forth his plan. He would go alone at night; he would climb the walls; he would sleep in the park- Louis Valmeras stopped him at once:

"You will not climb walls of that height so easily. If you do, you will be received by two huge sheep-dogs which belonged to my mother and which I left behind at the castle."

"Pooh! A dose of poison-"

"Much obliged. But suppose you escaped them. What then? How would you get into the castle? The doors are ma.s.sive, the windows barred. And, even then, once you were inside, who would guide you? There are eighty rooms."

"Yes, but that room with two windows, on the second story-"

"I know it, we call it the glycine room. But how will you find it? There are three staircases and a labyrinth of pa.s.sages. I can give you the clue and explain the way to you, but you would get lost just the same."

"Come with me," said Beautrelet, laughing.

"I can't. I have promised to go to my mother in the South."

Beautrelet returned to the friend with whom he was staying and began to make his preparations. But, late in the day, as he was getting ready to go, he received a visit from Valmeras.

"Do you still want me?"

"Rather!"

"Well, I'm coming with you. Yes, the expedition fascinates me. I think it will be very amusing and I like being mixed up in this sort of thing.-Besides, my help will be of use to you. Look, here's something to start with."

He held up a big key, all covered with rust and looking very old.

"What does the key open?" asked Beautrelet.

"A little postern hidden between two b.u.t.tresses and left unused since centuries ago. I did not even think of pointing it out to my tenant. It opens straight on the country, just at the verge of the wood."

Beautrelet interrupted him quickly:

"They know all about that outlet. It was obviously by this way that the man whom I followed entered the park. Come, it's fine game and we shall win it. But, by Jupiter, we must play our cards carefully!"

Two days later, a half-famished horse dragged a gipsy caravan into Crozant. Its driver obtained leave to stable it at the end of the village, in an old deserted cart-shed. In addition to the driver, who was none other than Valmeras, there were three young men, who occupied themselves in the manufacture of wicker-work chairs: Beautrelet and two of his Janson friends.

They stayed there for three days, waiting for a propitious, moonless night and roaming singly round the outskirts of the park. Once Beautrelet saw the postern. Contrived between two b.u.t.tresses placed very close together, it was almost merged, behind the screen of brambles that concealed it, in the pattern formed by the stones of the wall.

At last, on the fourth evening, the sky was covered with heavy black clouds and Valmeras decided that they should go reconnoitring, at the risk of having to return again, should circ.u.mstances prove unfavorable.

All four crossed the little wood. Then Beautrelet crept through the heather, scratched his hands at the bramble-hedge and, half raising himself, slowly, with restrained movements, put the key into the lock. He turned it gently. Would the door open without an effort? Was there no bolt closing it on the other side? He pushed: the door opened, without a creak or jolt. He was in the park.

"Are you there, Beautrelet?" asked Valmeras. "Wait for me. You two chaps, watch the door and keep our line of retreat open. At the least alarm, whistle."

He took Beautrelet's hand and they plunged into the dense shadow of the thickets. A clearer s.p.a.ce was revealed to them when they reached the edge of the central lawn. At the same moment a ray of moonlight pierced the clouds; and they saw the castle, with its pointed turrets arranged around the tapering spire to which, no doubt, it owed its name. There was no light in the windows; not a sound.

Valmeras grasped his companion's arm:

"Keep still!"

"What is it?"

"The dogs, over there-look-"

There was a growl. Valmeras gave a low whistle. Two white forms leapt forward and, in four bounds, came and crouched at their master's feet.

"Gently-lie down-that's it-good dogs-stay there."

And he said to Beautrelet:

"And now let us push on. I feel more comfortable."