At the door of the shop of Wosk & Co. they all alighted, and Miss Varlins, followed by the two men, entered. Judas came forward as they stood by the counter, and on seeing his visitors narrowed his eyes down at once to their most dangerous expression.

"Humph!" thought Fanks, grimly, "Judas knows our errand."

"Monsieur Guinaud," said Judith, calmly, "there was a packet directed to Miss Judith at the post office here, which, I learn, was delivered to you by mistake. May I ask you to return it to me?"

Judas shot a glance of amazement at Fanks, with whom he credited this tracking of the letters, and opening his crafty eyes to their widest, looked guilelessly at the lady.

"Mais oui, mademoiselle," he said, with a shrug, "de lettres you do tell me of are with me. C'est bien certain ze postage was mistook. Mais why to you I gif zem?"

"Because the packet was meant for me."

"Yes; I posted it," said Roger, quickly. "It was given to you by mistake."

"It is de name 'Mademoiselle Judith," observed Guinaud, doubtfully.

"Which was how the mistake occurred," explained Fanks, easily. "Come, Monsieur Guinaud, hand over those letters at once, if you please."

"Eh, très-bien," answered Judas, promptly. "I haf no wis to them keep. Zey are nosing to me. I did not know ze person zey were to."