"That depends on you," said Guerchard curtly.
"On me?" cried Lupin, in genuine surprise.
"Yes, I've a little bargain to propose to you," said Guerchard.
"Have you?" said Lupin; and his watchful face was serene again, his smile almost pleasant.
"Yes," said Guerchard. And he paused, hesitating.
"Well, what is it you want?" said Lupin. "Out with it! Don't be shy about it."
"I offer you—"
"You offer me?" cried Lupin. "Then it isn't true. You're fooling me."
"Reassure yourself," said Guerchard coldly. "To you personally I offer nothing."
"Then you are sincere," said Lupin. "And putting me out of the question?"
"I offer you liberty."
"Who for? For my concierge?" said Lupin.
"Don't play the fool. You care only for a single person in the world. I hold you through her: Sonia Kritchnoff."
Lupin burst into a ringing, irrepressible laugh:
"Why, you're trying to blackmail me, you old sweep!" he cried.
"If you like to call it so," said Guerchard coldly.
Lupin rose and walked backwards and forwards across the room, frowning, calculating, glancing keenly at Guerchard, weighing him. Twice he looked at the clock.
He stopped and said coldly: "So be it. For the moment you're the stronger… . That won't last… . But you offer me this child's liberty."
"That's my offer," said Guerchard; and his eyes brightened at the prospect of success.
"Her complete liberty? … on your word of honour?" said Lupin; and he had something of the air of a cat playing with a mouse.
"On my word of honour," said Guerchard.
"Can you do it?" said Lupin, with a sudden air of doubt; and he looked sharply from Guerchard to the clock.
"I undertake to do it," said Guerchard confidently.
"But how?" said Lupin, looking at him with an expression of the gravest doubt.
"Oh, I'll put the thefts on your shoulders. That will let her out all right," said Guerchard,
"I've certainly good broad shoulders," said Lupin, with a bitter smile. He walked slowly up and down with an air that grew more and more depressed: it was almost the air of a beaten man. Then he stopped and faced Guerchard, and said: "And what is it you want in exchange?"
"Everything," said Guerchard, with the air of a man who is winning. "You must give me back the pictures, tapestry, Renaissance cabinets, the coronet, and all the information about the death of the Duke of Charmerace. Did you kill him?"
"If ever I commit suicide, you'll know all about it, my good Guerchard. You'll be there. You may even join me," said Lupin grimly; he resumed his pacing up and down the room.
"Done for, yes; I shall be done for," he said presently. "The fact is, you want my skin."
"Yes, I want your skin," said Guerchard, in a low, savage, vindictive tone.
"My skin," said Lupin thoughtfully.
"Are you going to do it? Think of that girl," said Guerchard, in a fresh access of uneasy anxiety.
Lupin laughed: "I can give you a glass of port," he said, "but I'm afraid that's all I can do for you."
"I'll throw Victoire in," said Guerchard.
"What?" cried Lupin. "You've arrested Victoire?" There was a ring of utter dismay, almost despair, in his tone.
"Yes; and I'll throw her in. She shall go scot-free. I won't bother with her," said Guerchard eagerly.
The front-door bell rang.
"Wait, wait. Let me think," said Lupin hoarsely; and he strove to adjust his jostling ideas, to meet with a fresh plan this fresh disaster.
He stood listening with all his ears. There were footsteps on the stairs, and the door opened. Dieusy stood on the threshold.
"Who is it?" said Guerchard.
"I accept—I accept everything," cried Lupin in a frantic tone.
"It's a tradesman; am I to detain him?" said Dieusy. "You told me to let you know who came and take instructions."
"A tradesman? Then I refuse!" cried Lupin, in an ecstasy of relief.
"No, you needn't keep him," said Guerchard, to Dieusy.
Dieusy went out and shut the door.
"You refuse?" said Guerchard.
"I refuse," said Lupin.
"I'm going to gaol that girl," said Guerchard savagely; and he took a step towards the door.
"Not for long," said Lupin quietly. "You have no proof."
"She'll furnish the proof all right herself—plenty of proofs," said Guerchard brutally. "What chance has a silly child like that got. when we really start questioning her? A delicate creature like that will crumple up before the end of the third day's cross- examination."
"You swine!" said Lupin. "You know well enough that I can do it—on my head—with a feeble child like that; and you know your Code; five years is the minimum," said Guerchard, in a tone of relentless brutality, watching him carefully, sticking to his hope.
"By Jove, I could wring your neck!" said Lupin, trembling with fury. By a violent effort he controlled himself, and said thoughtfully, "After all, if I give up everything to you, I shall be free to take it back one of these days."
"Oh, no doubt, when you come out of prison," said Guerchard ironically; and he laughed a grim, jeering laugh.
"I've got to go to prison first," said Lupin quietly.
"Pardon me—if you accept, I mean to arrest you," said Guerchard.
"Manifestly you'll arrest me if you can," said Lupin.
"Do you accept?" said Guerchard. And again his voice quivered with anxiety.
"Well," said Lupin. And he paused as if finally weighing the matter.
"Well?" said Guerchard, and his voice shook.
"Well—no!" said Lupin; and he laughed a mocking laugh.
"You won't?" said Guerchard between his teeth.
"No; you wish to catch me. This is just a ruse," said Lupin, in quiet, measured tones. "At bottom you don't care a hang about Sonia, Mademoiselle Kritchnoff. You will not arrest her. And then, if you did you have no proofs. There ARE no proofs. As for the pendant, you'd have to prove it. You can't prove it. You can't prove that it was in her possession one moment. Where is the pendant?" He paused, and then went on in the same quiet tone: "No, Guerchard; after having kept out of your clutches for the last ten years, I'm not going to be caught to save this child, who is not even in danger. She has a very useful friend in the Duke of Charmerace. I refuse."
Guerchard stared at him, scowling, biting his lips, seeking a fresh point of attack. For the moment he knew himself baffled, but he still clung tenaciously to the struggle in which victory would be so precious.
The front-door bell rang again.
"There's a lot of ringing at your bell this morning," said Guerchard, under his breath; and hope sprang afresh