"With tuberoses?"

"Or with the Sacred Herb. I must find out who she is."

"How can you?"

"I don't know. I can't say. But if we can find her we may learn if she killed Agstone, and why she did it. That discovery will lead to learning who murdered Lanwin. It is the beginning of the end. Give up the case indeed!" cried Prelice exultantly—"why, it's the only thing that renders life in London bearable."

"But do you think that this lady is guilty?" asked Shepworth doubtfully.

"Of course I do. Otherwise, why should she be scented with the perfume of the Sacred Herb, which has to do with both crimes?"

Shepworth shook his head, unable to answer this question.

[CHAPTER XII.]

MRS. DOLLY ROVER.

Shortly after the reference to the unknown lady, Lord Prelice took a hasty leave. There was nothing more to be said, as matters up to date had been threshed out thoroughly between them. Until the inquest had been held on the body of Agstone, and Shepworth's immediate future was decided, no move could be made towards elucidating the mysteries. Moreover, Prelice was mortally afraid lest Shepworth should alter his mind about making him ambassador to Miss Chent at Hythe. Strong-willed as the young man was, when he chose to exercise that same will he could not deny himself the pleasure of being in Mona's company, if only for ten minutes. Besides, he very much wished to learn if she truly loved Ned, for by this time he felt sure that Ned had no very deep affection for her.