“If you care to call on me to-morrow,” he said, “I could perhaps show you something which might change your opinion.”

The detective bowed.

“I am always open, sir,” he said, “to conviction. I will come about twelve o’clock.”

Mr. Sabin went back to the palm lounge. Lucille and Reginald Brott were sitting together at a small table, talking earnestly to one another. The Prince and Lady Carey had joined another party who were all talking together near the entrance. The latter, directly she saw them coming, detached herself from them and came to him.

“Your coffee is almost cold,” she said, “but the Prince has found some brandy of wonderful age, somewhere in the last century, I believe.”

Mr. Sabin glanced towards Lucille. She appeared engrossed in her conversation, and had not noticed his approach. Lady Carey shrugged.

“You have only a few minutes,” she said, “before that dreadful person comes and frowns us all out. I have kept you a chair.”

Mr. Sabin sat down. Lady Carey interposed herself between him and the small table at which Lucille was sitting.

“Have they discovered anything?” she asked.

“Nothing!” Mr. Sabin answered.