The other nodded. "One year and ten months, to be exact."

"And now," the doctor went on, angrily, "you trust everything to a stranger."

"It is better so, is it not? The affair is dangerous. Neither you, nor I, can afford to be mixed up in it."

Doctor Hartmann brought his fist down upon the desk with a bang. "Gott in Himmel!" he roared. "We must take some risks, my friend. I tell you I must have De Grissac's snuff box without further delay. If that does not solve the problem, we are at the end of our rope."

"It will solve it," the other man replied imperturbably. "I have positive assurances to that effect. Furthermore, I have every reason to believe that we shall hear from London before the end of the week."

"Have you received any word?" the doctor inquired eagerly.

"Yes. The attempt was to be made either to-day or to-morrow. Our man will report to you at once. He knows nothing of the matter, of course. He will deliver the box to you, and receive the money."

"Who is the fellow?"

"I do not know his name. I have not seen him, myself. Gratz arranged everything in London. I considered it very important that nothing should occur which would connect us with the matter in any way. Monsieur de Grissac will discover his loss very quickly and will use every effort to prevent the box from falling into our hands. Gratz and the others would invite suspicion at once. The fellow they have chosen to handle the matter is unknown to the French police. He will attract no attention. The plan appears to be perfect."

The doctor nodded slowly, chewing on his cigar. "I hope you are right, Mayer," he said, and looked at his watch.