you utter words of triumph, at that same moment the ground will open beneath your feet. The place of your death is chosen. The snare is laid. Beware, Lupin."
Don Luis smiled.
"Good," he said. "Things are taking shape."
"Do you think so, Chief?"
"I do. And who gave you the letter?"
"Ah, we've been lucky for once, Chief! The policeman to whom it was handed happened to live at Les Ternes, next door to the bearer of the letter. He knows the fellow well. It was a stroke of luck, wasn't it?"
Don Luis sprang from his seat, radiant with delight.
"What do you mean? Out with it! You know who it is?"
"The chap's an indoor servant employed at a nursing-home in the Avenue des Ternes."
"Let's go there. We've no time to lose."
"Splendid, Chief! You're yourself again."
"Well, of course! As long as there was nothing to do I was waiting for this evening and resting, for I can see that the fight will be tremendous. But, as the enemy has blundered at last, as he's given me a trail to go upon, there's no need to wait, and I'll get ahead of him. Have at the tiger, Mazeroux!"
It was one o'clock in the afternoon when Don Luis and Mazeroux arrived at the nursing-home in the Avenue des Ternes. A manservant opened the door. Mazeroux nudged Don Luis. The man was doubtless the bearer of the letter. And, in reply to the sergeant's questions,
