"Who was the man," he asked, in a threatening tone, as he approached Walter. The latter hesitated. "We are determined to ferret out this matter, and it will be to your advantage to tell us the whole story, for we shall find it out sooner or later."
"I must have time to think," he answered, as he put his hands to his head, and turned to Clifford.
"You may have until to-morrow, but in the meantime, we shall see to it that you are kept within our sight," responded John, as he motioned to the men to take him away.
As he left the door Harry said: "Why do you suppose he wanted time?"
John looked at Clifford for a moment, and answered: "Evidently, he had hopes that Clifford would not survive."
CHAPTER XVII
UNRAVELING THE MYSTERIES
At the suggestion of the Professor, Clifford was left in quiet, while John and the boys deferred their further attempts to explore the mysterious occurrences that were looming up.