"On that night were there any notes in the pocket-book?"

"I cannot say. Rudolph declares that he won twenty pounds from Edgar on that night. Edgar could not pay him save with an I.O.U., so I don't think there could have been money in the book."

"Then why should the assassin steal it?"

"Why, indeed!" echoed Janet, who had been silent for some time; "that is what we wish to find out. As Edgar's jewellery was untouched, robbery could not have been the motive of the crime. I believe myself that the pocket-book must have contained some papers of value to the murderer. No person but he could have taken it, for I examined very carefully the clothes Edgar wore when he was killed, and could not find the pocket-book. Dr. Ellis," said Janet, earnestly, "it seems to me that if you can find that book, you will be able to lay hands on the criminal."

"Possibly, Miss Gordon. But in what direction am I to look. In the autumn many men wear fur-lined overcoats, so that is not a strong clue. Moreover, the pocket-book must long since have been destroyed if the murderer valued his neck. No; on the whole I think it will be best to see Busham, as I said before. My movements will depend upon the sort of information he supplies."

"He will tell you nothing."

"Not of his own free will, perhaps, but I maybe in a position to force his confidence."

It was now late, as this conversation between the three had lasted a considerable time. Laura looked so fatigued and ill that Ellis, in his capacity of medical man, insisted that she should retire. "Take as much rest and sleep as you can, Mrs. Moxton, and don't worry. I will help you all I can in this matter, and I have no doubt I shall be able to clear you of all suspicion. Good-night."

Ellis was accompanied to the door by Janet, who was hopeful of his success.

"You will be certain to solve this mystery--you and Mr. Cass," said she. "Think how much you have discovered already by observation."