"Undoubtedly," assented Mr. Levy, senior, gravely.

"Undoubtedly," echoed his son. "I am quite satisfied, Miss Thurwell, and I thank you for your candor."

"I suppose you will want me to tell you all about it," she said, with a faint shudder.

"Not unless you know something fresh. I have every particular in my head that has been published."

Helen looked surprised.

"You read all about it, I suppose?" she asked.

"Yes; such things interest us, naturally. This one did me particularly, because, from the first, I saw that the police were on the wrong tack."

"What is your idea about it, then?" she asked.

"Simply this," he answered, turning round and facing her for the first time. "All the time and trouble spent in scouring the country and watching the ports and railway stations was completely wasted. The murder was not committed by an outsider at all. The first thing I shall want, when we begin to work this, is the name and address of all the people living within a mile or two of the scene of the murder, and then every possible particular concerning Mr. Bernard Brown, of Falcon's Nest."

She could not help a slight start. And from his looking at her now for the first time so fixedly, and from the abrupt manner in which he had brought out the latter part of his sentence, she knew that he was trying her.