"Have you solved the mystery of the submerged bed?" smiled Jean.

Lydia laughed.

"I'm not probing too deeply into the matter," she said. "Poor Mrs. Cole-Mortimer was terribly upset."

"She would be," said Jean. "It was her own eiderdown!"

This was the first hint Lydia had received that the house was rented furnished.

They drove into Nice that morning, and Lydia, remembering Jack Glover's remarks, looked closely at the chauffeur, and was startled to see a resemblance between him and the man who had driven the taxicab on the night she had been carried off from the theatre. It is true that the taxi-driver had a moustache and that this man was clean-shaven, and moreover, had tiny side whiskers, but there was a resemblance.

"Have you had your driver long?" she asked as they were running through Monte Carlo, along the sea road.

"Mordon? Yes, we have had him six or seven years," said Jean carelessly. "He drives us when we are on the continent, you know. He speaks French perfectly and is an excellent driver. Father has tried to persuade him to come to England, but he hates London--he was telling me the other day that he hadn't been there for ten years."

That disposed of the resemblance, thought Lydia, and yet--she could remember his voice, she thought, and when they alighted on the Promenade des Anglaise she spoke to him. He replied in French, and it is impossible to detect points of resemblance in a voice that speaks one language and the same voice when it speaks another.

The promenade was crowded with saunterers. A band was playing by the jetty and although the wind was colder than it had been at Cap Martin the sun was warm enough to necessitate the opening of a parasol.

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It was a race week, and the two girls lunched at the Negrito. They were in the midst of their meal when a man came toward them and Lydia recognised Mr. Marcus Stepney. This dark, suave man was no favourite of hers, though why she could not have explained. His manners were always perfect and, towards her, deferential.

As usual, he was dressed with the precision of a fashion-plate. Mr. Marcus Stepney was a man, a considerable portion of whose time was taken up every morning by the choice of cravats and socks and shirts. Though Lydia did not know this, his smartness, plus a certain dexterity with cards, was his stock in trade. No breath of scandal had touched him, he moved in a good set and was always at the right place at the proper season.