A loud thud on the door interrupted him and, even as he asked the question, Jack was on his way toward the door. It was dark outside as there was no moon but the light of the lamp shone out and enabled him to see for a distance of several feet. There was no one in sight and, after a hasty glance around, he was about to turn back when his eye caught sight of an arrow deeply imbedded in the pine door. It took a strong pull to draw it out, but in a moment he had it inside and was showing it to Bob who, instead of following him to the door had hastened to the window beneath which he had set the trap.
“Another warning, I suppose,” he said with a slight grin as he pointed to a bit of paper which was tied with a bit of string about the middle of the arrow.
Jack had it off in a jiffy and together they bent over it. There were but two words printed in large letters, “Last warning.”
“The plot thickens,” Bob whispered and Jack was sure that he detected a note of uneasiness in his brother’s voice.
“Three strikes and out, eh?”
“Not out,” Bob snapped. “In the words of the immortal Perry, ‘We’ve only just begun to fight’.”
“If only we could get hold of something to fight. Ghosts are mighty elusive things, I’ll tell the world,” Jack declared.
“But, judging from that note, we’re about due to find something,” Bob reminded him.
“How about calling Mr. Sleeper?”
“Not yet. Let’s wait and see if anything more happens. We can show him the arrow and note just as well in the morning.”