She started like one electrified.
“Another murder? I want to see him avenged, even if I have hands that are red! I want you to take the trail of his slayer. You will do this, Mr. Carter? You won’t refuse to become the servant of your human quarry?”
“It is no mystery,” was the reply. “The murder of your father is not a puzzle!”
“Then you know——”
“I know, for I have a living witness.”
Opal was silent; but her deep eyes seemed to pierce the detective through and through.
“I’m calm now. Name him.”
At this moment the front door opened and some one came in.
“It is Claude, my brother,” said the girl, scarcely above a whisper. “Wait a minute. He may go upstairs.”
Carter looked toward the door and seemed to smile.