"Montrose spoke of coming through a gully."
"There is a gully near the Dodd farm. Now that I come to think of it, I believe there is an abandoned road through it. The place has been overgrown with brush for the past five years, though."
"Perhaps they cleared it out."
"The road used to lead out to one of the private, right-of-way roads in the back township. Since the Shore Road was extended, it's never been used. I'll bet that's what they're doing—using that old road and bringing the cars out the back way. The police haven't been watching the private roads at all."
"It's a smart scheme. Well, it won't last much longer."
Suddenly, a voice rang out, clear and sharp:
"I'll get the lantern. It's right here."
Startled, the boys wheeled about. The voice seemed to be right beside them. Instantly, they realized that it was only a trick of the echoes, and that the voice came from the passage leading into the cave.
Some one was approaching. They could hear his heavy boots clumping on the rocky floor.
"Quick! The tunnel!" whispered Frank.