Number Ten had said this very quietly. He was in the act of lighting a cigarette when he spoke, and he finished lighting it, blew out the match, and threw it into the nearest ash-tray before he glanced at Naniescu. Then he smiled, because Naniescu's face expressed arrogance first, then bewilderment, and finally indecision.
"Is it a challenge?" he reiterated sardonically. "I don't mind, you know, one way or the other. There are at least three governments—neighbours of yours, by the way—who will pay me ten thousand pounds apiece for certain services which they require, and which I can render them. But you have behaved like a knave and a fool, my friend, and it will amuse me to punish you. So listen to me! Unless you give me a cheque for the ten thousand pounds which you promised me, and which I can cash at your fusty old bank over the way this very afternoon, I guarantee you that Lady Tarkington's articles will not be published in any English newspaper."
He smoked on in silence for a little while longer, blowing rings of smoke through his pursed lips, and in the intervals laughing softly, mockingly to himself, or throwing an occasional glance of intelligence in the direction of Kervoisin, who apparently immersed in a book had taken no part in the conversation. Naniescu's bewilderment had become ludicrous, and at one moment when he took his perfumed handkerchief out of his pocket and mopped his streaming forehead, the face of his spy-in-chief became distorted with that look of ferocious cruelty which was so characteristic of him.
"I haven't a great deal of time to spare," Number Ten remarked dryly, after a few minutes' silence; "if you accept my challenge I start for London to-night."
"You'll never get there in time," Naniescu rejoined, with an attempt at swagger.
Number Ten smiled. "Don't you think so?" he asked simply.
"The frontier is closed——"
"Would you rather risk it than pay me the ten thousand pounds?"
Naniescu appealed to his friend.
"De Kervoisin——" he said, almost pitiably.