“I believe you’re right,” agreed Florence. “This tunnel must’ve been used for a secret exit through the church.”

“I think it’s more than just an exit,” declared Jo Ann. “They would never have made this tunnel this broad and high or lined it with stone if it were to be used merely as a way of escape.”

“What else could it’ve been used for, then—and who do you suppose ever had it made in the first place?” Florence asked curiously.

“I believe your house used to be closely connected with the church in some way—maybe it was used as a home for the priests. Back in the days when these buildings were erected, they were always having wars and revolutions. This tunnel would make it possible for the priests to get over to the church, no matter what was going on outside. Then just think what an excellent place this would be to hide anyone or anything! I believe it was used as a hiding place in war times as well as an——” She stopped suddenly. “Oh, here’s another tunnel!” she exclaimed as she peered into another large opening in the side of the passageway. “And this one goes on farther.”

“It looks as if there’s a network of passages,” put in Peggy excitedly as she and Florence crowded near Jo Ann to see this discovery. “I wonder where they go and what they were for.”

“We’ll explore them and find out; but we must be careful not to get lost,” cautioned Jo Ann. “No one’d ever know what had happened to us. They’d think we’d just evaporated in thin air.”

“Ugh!” shuddered Peggy. “Don’t even mention such a thing. It gives me the creeps.”

“Oh, look, here’s a little niche in the wall!” exclaimed Florence. “And look—what is this?” she asked, holding up a queer-shaped piece of dark metal.

“It looks like some sort of a candle holder to me,” Peggy volunteered. “The priests must have kept candles there to use when going back and forth through the——” She stopped abruptly and sprang back, shrieking. Something black and winged had struck her in the face.

The next moment Florence cried excitedly, “What is that awful thing?” She slapped madly at a passing object, then began to sneeze violently.