"Are you sure there is no clue, Mr. Link?"
"Absolutely none; even the weapon with which the crime was committed cannot be found."
"You have searched the house?"
"Every inch of it, and with the result that I have found nothing. The surroundings of the case are most mysterious. If we do not identify the dead we cannot hope to trace the murderer. How the wretch got into the house is more than I can discover."
"It is strange," admitted Lucian thoughtfully, "yet in some secret way people were in the habit of entering the house, and Berwin knew as much; not only that, but he protected them from curiosity by denying that they even existed."
"I don't quite follow you, Mr. Denzil."
"I allude to the shadows on the blind, which I saw myself a week before the murder took place. They were those of a man and a woman, and must have been cast by bodies of flesh and blood. Therefore, two people must have been in Berwin's sitting-room on that night; yet when I met Berwin who was absent at the time—he denied that anyone could have entered his house without his knowledge. More, he actually insisted that I should satisfy myself as to the truth of this by examining the house."
"Which you did?"
"Yes, but found nothing; yet," said Lucian, with an air of conviction, "however the man and woman entered, they were in the house."
"Then the assassin must have come in by the same way; but where that way can be, or how it can be found, is more than I can say."