“All right. We’ll come and get you out. How many men do you want?”
“It’ll take the whole crowd of us.”
“No, it won’t. We’re not goin’ to leave these kids here alone. Joe, here, can stay and watch ’em.”
“They’re tied, ain’t they?”
“What of it? I’m not trustin’ to no ropes. Somebody’s got to stay and keep an eye on them.”
“I’ll stay,” grumbled the man addressed as Joe.
“I don’t care who stays,” snapped Dan. “If you don’t come out and help drag that car out of the mud it’ll be in so deep we’ll never get it out. Come on.”
The men trooped out of the cave. Joe, who was left behind, sat down on a box and regarded the lads balefully. However, he said nothing. Gus came back through the passage.
“You might as well be loadin’ some of those boxes into the other cars, while we’re away,” he said. “Take a look in every little while and see that those kids are still tied up.”
The man grumbled assent, and followed Gus back down the passage.
The Hardy boys were left alone in the light of the flickering candles ranged about the gloomy cave.
“Well, we’ve lost out, I guess,” remarked Frank bitterly. “If we ever do get back to Bayport it won’t be until the auto thieves have all cleared out of here with the cars.”
“It doesn’t look very bright,” sighed Joe.
Suddenly, Frank sat up.
“Say!” he exclaimed. “Did they take your revolver?”
“No. I guess they didn’t know I had one.”
“They took mine and missed yours. You still have it?”
“Right in my pocket.”
“Good!”
“What good is it when I can’t get at it?”
“If you can, we have only this chap Joe to deal with.” The flame of the candle caught Frank’s eye. He had an inspiration. “If only I could just get these ropes off my wrists!” he said.
Frank edged over toward the candle. Then, with his back to the flame, he lowered his arms until the cord that bound his wrists was within an inch of the wick.
A candle does not throw out much heat, but that little flame seared Frank’s wrists and he had to clench his teeth to keep from crying out with the pain.
He could hold the rope in the flame for a few moments only, and then he withdrew it. When the scorching pain had somewhat subsided, he tried again. The flame licked at the heavy cord, weakening it strand by strand.
“Look out, Frank,” warned Joe.
Frank scrambled back to the corner.
He was just in time. Heavy footsteps in the passage announced the approach of their guard, who came to the entrance, looked at them sullenly for a moment, then turned away again. He went back to the outer cave.
Hardly had he disappeared when Frank was back at the candle. He thrust the rope into the flame again.
When he could stand the burning heat no longer he withdrew and tried to break his bonds by sheer force. But, although the ropes had been weakened, they refused to break. He returned to the flame again, and on the next attempt he was successful. So many strands had been burned through that the cords snapped, and his hands were free.
Quickly, Frank went over to his brother. First of all, he took the revolver from Joe’s pocket and put it on the rock beside him, in readiness. Then he knelt down and tugged at the strong ropes that bound Joe’s wrists so tightly.
The knots were stubborn, but he finally undid them. The ropes fell apart and Joe was free.
“Now!” gritted Frank, picking up the revolver. “We’ll go and attend to our friend in the cave.”
“Hadn’t we better wait here for him? There may be someone with him.”
“I guess you’re right. We’ll take him by surprise the next time he comes back.”
Frank went over to the side of the tunnel that led out into the main cave.
“Bring those ropes with you, Joe. Take the other side.”
Joe picked up the cords that had bound his own wrists, and took up his position at the other side of the entrance. There the boys waited.
In a short time they heard heavy footsteps in the tunnel. Their guard was returning.
Frank gripped the revolver. The lads pressed themselves against the wall. The footsteps drew closer. Then a dark figure emerged from the opening.
Frank stepped swiftly out behind the rascal and pressed the revolver against his back.
“Hands up!” he ordered sharply.
Their victim gave a cry of fright. He had been startled almost out of his wits. His hands shot up.
“Stand where you are!”
Frank still pressed the muzzle of the revolver against their erstwhile captor while Joe searched the man for weapons and found a small automatic in the fellow’s hip pocket. This he took.
“Put your hands behind your back!” ordered Frank.
Their prisoner obeyed.
Quickly, Joe tied the man’s wrists.
“Go over and sit on that box!”
Muttering and grumbling with rage, the fellow did so. Joe hunted around until he found another length of rope, and with this he bound the man’s feet.
“I guess you’ll be all right here until the others come back,” Frank told the captive.
“If ever I get free of these ropes—”
“Keep quiet,” ordered Frank, brandishing the revolver menacingly. Their prisoner was silenced abruptly.
“Blow out the candles, Joe. He might think of the same idea.”
The candles were blown out. The boys were in complete darkness.
“Hey!” roared their prisoner. “You’re not goin’ to leave me here alone in the dark, are you?”
“Exactly. Where’s our flashlight, Joe?”
“I have it here. It was in my pocket.” Joe turned on the light. In its glow they saw their prisoner, bound hand and foot, sitting disconsolately on the box.
“Fine. We’ll go now.”
They left the cave, unmindful of the appeals of the auto thief, and made their way down a passage that led into the outer cavern where the stolen cars were stored. The light showed them a large opening that they had not seen when they were in the place on the first occasion.
“I guess this is the way they drive the cars out,”
