"Oh well--" He shrugged his shoulders and slipped into the straps of his pack. Then he went back again to the granite ledge. "I wonder if there's a way down," he said.

There was, but it took all of Jerry's strength to see him safely through. On a fan-shaped talus of spreading boulders he stopped. There was a limestone wall beyond. And at its base, from a crevice that was almost a cave, came a furious rush of air and steam.

[Ill.u.s.tration]

It touched him lightly a hundred feet away, and he threw himself flat to escape the hot blast. Endlessly it came, with its soft, rushing roar, a ceaseless, scorching blast from the cold rocks.

"That's almighty funny," mused Foster, and sniffed the air. There was no odor.

"And is it hot!" he said. "Nothing like that in my geology book. And what is beyond? Looks like concrete work, as if someone had plastered up the cave." He picked his way quickly across the rock slope.

It was hard going. Below him the rocks and dirt went steep to the canyon floor. At its foot the blast swept diagonally over the slope.

He must see what lay beyond....

"Curious," he thought; "curious if that is nature's work--and a lot more so if it isn't."

A rock rolled beneath his feet. Another! He scrambled and fought desperately for foothold in the slipping earth. Then, rolling and clawing, he rode helpless on the slide straight toward the mysterious blast. He felt it envelop him, hot and strangling. His lungs were dry and burning ... the blazing sun faded from the rocks ... the world was dark....

Darkness was still about him when he awoke. But it was cool; the air was sweet on his lips. And it was not entirely dark.

He turned his head. He was in a room. On a rough-hewn table a candle was burning. Its light cast flickering shadows on walls of stone.

Rumbling in his ears was the sound of the blast that had overwhelmed him. It echoed, seemingly, from far back in the stone cliff.

Jerry made a move to sit up. He found that his hands and feet were tied, his body bound to the rough board bed.

At the sound of his stirring, a figure came out from the farther shadow. It was that of a man. Jerry looked at him in silence. He was tall, his thin erectness making him seem abnormal in the low room. The lean face was unshaven, and from under a thatch of black hair a pair of deep-set eyes stared penetratingly at the figure on the rude bed.

"Well," asked Jerry, at length, "what's the big idea?"

There was no reply. Only the intent, staring eyes.

"You got me out of that man-trap of yours," Jerry continued. "You saved my life."

The tall man finally spoke. "Yes, I saved your life. You missed the hottest part of the exhaust. I pumped you full of oxygen."

"Then why tie me up like this?" Jerry Foster was frankly puzzled.

"You are lucky to be alive. Spies are not always allowed--" He interrupted himself abruptly. "You are a reporter," he stated.

"Wrong," said Jerry Foster.

"Who sent you?"

"n.o.body sent me. I heard the noise of your infernal blast-furnace and came down to have a look."

"Who sent you?" repeated the man. "Goodwin? The Stillwater crowd? Who was it?"

"I don't know what you are talking about," protested Jerry. "I don't know who your Goodwin or Stillwater people are. I don't know who you are--I don't give a d.a.m.n. Take these ropes off and cut out the melodrama. I'll go on my way, and I don't care if I never see you again."

"That's a lie." The tall figure leaned over to shake a bony fist.

"You'd report to Goodwin. He stole my last invention. He'll not get this."

Jerry considered the wild figure carefully. "He's a nut," he thought.

When he spoke, his voice was controlled.

"Now, see here," he said: "I don't know anything about this. I'm Jerry Foster, live in San Francisco--"

"So does Goodwin."

"Confound you and your Goodwin! So do a million other people live there! I'm getting away from there; I'm heading into the hills for a short vacation. All I want is to get away from the world. I'm looking for a little peace and quiet."

The thin man interrupted with a harsh laugh.

"Come here spying," he said, "and tell me you want to get away from the world." Again he laughed shrilly.

"And I am going to be your little fairy G.o.dmother. I wish you were Goodwin himself! I wish I had him here. But you'll get your wish--you'll get your wish. You'll leave the world, you shall, indeed."

He rocked back and forth with appreciation of his humor.

"Didn't know I was all ready to leave, did you? All packed and ready to go. Supplies all stowed away; enough energy stored to carry me millions of miles. Or maybe you did know--maybe there are others coming...." He hurried across the room to open a heavy door of split logs in the rock wall.

"I'll fool them all this time," he said; "and you'll never go back to tell them." The door closed behind him.

"Crazy as a bed-bug," Jerry told himself. He strained frantically at the ropes that bound him. "Looks bad for me: the old bird said I'd never go back. Well, what if I die now ... or six months from now?

Though I know that doctor was wrong."

He tried to accept his fate philosophically, but the will to live was strong. And one of his wrists felt looser in its bonds.

Across the room his pack lay on the floor, and in it was a heavy forty-five. If he could get the pistol.... A knot pulled loose under his twisting fingers. One hand was free. He worked feverishly at the other wrist.

The ropes were suddenly loose. He pulled himself to his feet, took a moment to regain control of cramped muscles, then flung himself at the pack. When the heavy door opened he was behind it, his pistol in his hand.

There was no struggle: the lanky figure showed no maniacal fury.

Instead, the man did a surprising thing. He sank weakly upon the rough bunk where Jerry had lain, his face buried in his thin hands.

"I should have let you die," he said slowly, hopelessly. "I should have let you die. But I couldn't do that.... And now you'll steal my invention for Goodwin."

Jerry was as exasperated as he was amazed.

"I told you," he almost shouted. "I never knew anyone named Goodwin! I don't care a hoot about your invention. And as for letting me die--why didn't you? That's a puzzle: you were about to kill me, anyway."