He left the café without speaking to any one further. When he reached the pavement he slipped a five-franc piece into the hand of the tall commissionaire.

"You know most of the young ladies who come here, I suppose?" he asked.

"But certainly!" the man answered with a smile, "Monsieur desires?"

"I want the address of a young lady named Mermillon—Flossie, I think they call her," Duncombe said.

"Thirty-one, Rue Pigalle," the man answered promptly. "But she should be here within an hour. She never misses."

Duncombe thanked him, and hailed a carriage.

"Shall I give Mademoiselle any message?" the man asked confidentially.

"I am going to call for her," Duncombe answered. "If I do not find her I will return."

To drive to the Rue Pigalle was an affair of five minutes only. Duncombe climbed a couple of flights of narrow stairs, pushed open a swing gate, and found himself in front of an office, in which an elderly woman sat reading.

"Can you tell me where to find Mademoiselle Mermillon?" Duncombe asked.