Don Luis opened the envelope and read the following words, written in red ink:
"There's still time, Lupin. Retire from the contest. If not, it means your death, too. When you think that your object is attained, when your hand is raised against me and 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."