"There is no one in sight, mother, but I will put on my hat and go out the back door."
In a few minutes Shagarach returned by the street entrance.
"I thought I heard footsteps in the passageway and followed them around, but there is no one. The yard is empty."
"I will inform the policeman to-morrow," said his mother. "There are many loiterers about in these bad times. And you should acquaint them with the letter you received."
"I have done so, mother. I have considered it strange," he added, turning toward Emily, "that the parties opposed to us in the Floyd case should resort to murder. It is a confession of guilt."
"If they are caught."
"Murder will out. Moreover, I do not work alone. I have engaged the assistance of—whom do you think?"
"Of Mr. McCausland," said the mother, breaking in. "It was my suggestion."
"McCausland investigating Harry Arnold!" exclaimed Emily.
"Is it not amusing? But he will not allow that Arnold is at all open to suspicion, and of course I have not laid all my evidence before him."