manner. He examined the walls carefully by the candle, which he carried
in his hand, but no opening was apparent.

"Of course, there must be some secret spring to press," said the lad.
"That's how he gets in and out. A section of the wall moves, but where
it is I can't see. It will take time. I must look at every inch."

He was in the midst of his investigations when there sounded on the
wall back of him three raps.

"Ha! At least, that tells me where the opening is," thought the lad.
"It's on that side, but now I have to put that blamed bandage on. Well,
I may be able to escape yet."

True to his promise, he blindfolded himself well, and presently he
heard a noise, felt a draught of air, and he knew his captor was in the
room.

"You can now take off the handkerchief," said the man. "I have brought
you some more bags for bed clothing. It isn't much, but it is all I
have. They will keep you warm tonight."

"Are you going to imprison me over night?" asked Mark.

"Yes, and I'll stay here with you. No one can find us here. The secret
room is well hidden. But first I have another matter that needs
attention. I am going to ask you a question."

"What?" asked the captive, wondering what strange request the mentally
unbalanced man would make now.