“I’ll tell you,” replied Jimmie wrinkling his freckled nose, “there’s some one who is interested in the case which called us to Peru doing those stunts.”

“In that case,” Sam declared, “they have a definite reason for keeping us out of this particular ruin!”

“That’s the idea!” exclaimed Jimmie. “So far as we know, this man Redfern or some of his associates may be masquerading as ghosts.”

“I came to this temple to-night,” explained Sam, “thinking that perhaps this might be one of the way stations on the road to Lake Titicaca.”

“You have guessed it!” exclaimed Jimmie. “The men who have been sent south to warn Redfern are doing their first stunts here!”

“And that,” said Sam, “makes our position a dangerous one!”

CHAPTER XIII.
THE CLOSING OF A DOOR.

“I wonder if they expect to scare us out of the country by such demonstrations as that?” scoffed Carl.

“There is, doubtless, some reason for this demonstration,” Sam observed, thoughtfully, “other than the general motive to put us in terror of haunted temples, but just now I can’t see what it is.”

“Redfern may be hiding in there!” suggested Jimmie, with a wink.