The prisoner was frankly puzzled.

"Lolo?" he repeated. "M'sieur, I do not understand."

It was T. B.'s turn to be astonished.

"But the rendezvous—there was to be some rendezvous where the ship would come to pick up any member of the Nine who might become detached."

The man shook his head, and at that moment an idea occurred to T. B. He drew from his pocket a copy of Baggin's little "cross with the nobs," as it had been named at Scotland Yard.

"Do you know this?" he asked.

The man looked at it, and smiled.

"Yes—Poltavo drew that for me on the last occasion I met him in Paris."

"What does it mean?"

Again the prisoner shook his head.