"My murderous plots?" she repeated aghast. "You surely don't know what you're saying."

"I know this," and his face was not pleasant to see. "I have sufficient evidence to secure the arrest of your father, and possibly yourself. For months I have been working on that first providential accident of yours--the rich Australian who died with such remarkable suddenness. I may not get you in the Meredith case, and I may not be able to jail you for your attacks on Mrs. Meredith, but I have enough evidence to hang your father for the earlier crime."

Her face was blank--expressionless. Never before had she been brought up short with such a threat as the man was uttering, nor had she ever been in danger of detection. And all the time she was eyeing him so steadily, not a muscle of her face moving, her mind was groping back into the past, examining every detail of the crime he had mentioned, seeking for some flaw in the carefully prepared plan which had brought a good man to a violent and untimely end.

"That kind of bluff doesn't impress me," she said at last. "You're in a poor way when you have to invent crimes to attach to me."

"We'll go into that later. Where is Lydia?" he said shortly.

"I tell you I don't know, except that she has gone out for a drive. I expect her back very soon."