The sound was recast in his mind. Water!

Out of the nightmare depths of his subconscious, out of the fright of his childhood, he placed it. This was the sound after the darn broke, when, as a kid, he had been so nearly drowned. Water! A great wall of water, somewhere in the dust, hunting for him, hunting for him!

His foot jammed the accelerator down to the floorboards; the car bucked and promptly stalled. He started it again and strove to keep himself calm. With no spare tire and a bumpy road he could not afford the risk of too much speed. He held himself down to a crawling thirty-five miles an hour, tried to estimate the distance and direction of the water, and prayed.

The main highway jumped at him in the dust and he was almost run down by a big car roaring past to the north. A second followed it, then a vegetable truck, then the tractor unit of a semi-trailer freighter.

It was all he needed to know. He turned north.

He passed the vegetable truck and a jalopy-load of Okiestyle workers, a family. They shouted at him, but he kept going. Several cars more powerful than his passed him and he passed in turn several of the heaps used by the itinerant farm workers. After that he had the road to himself. Nothing came from the north.

The trainlike rumble behind him increased.

He peered into the rear-view mirror but could see nothing through the dusty haze.

There was a child sitting beside the road and crying—a little girl about eight. He drove on past, hardly aware of her, then braked to a stop. He told himself that she must have folks around somewhere, that it was no business of his. Cursing himself, he backed and turned, almost drove past her in the dust, then managed to turn around without backing and pulled up beside her. "Get in!"

She turned a dirty, wet, tragic face, but remained seated.

"I can't. My foot hurts."

He jumped out, scooped her up and dumped her in the righthand seat, noting as he did so that her right foot was swollen. "How did you do it?" he demanded, as he threw in the car.

"When the thing happened. Is it broke?" She was not crying now. "Are you going to take me home?"

"I—I'll take care of you. Don't ask questions."

"All right," she said doubtfully. The roar behind them was increasing. He wanted to speed up but the haze and the need to nurse his unreliable spare tire held him back. He had to swerve suddenly when a figure loomed up in the dust—a Nisei boy, hurrying toward them.

The child beside him leaned out. "That's Tommy!"

"Huh? Never mind. Just a goddam Jap."

"That's Tommy Hayakawa. He's in my class." She added. "Maybe he's looking for me."

He cursed again, under his breath, and threw the car into a turn that almost toppled it. Then he was heading back, into that awful sound.

"There he is," the child shrieked. "Tommy! Oh, Tommy!"

"Get in," he commanded, when he had stopped the car by the boy.

"Get in, Tommy," his passenger added.

The boy hesitated; the driver reached past the little girl, grabbed the boy by his shirt and dragged him in. "Want to be drowned, you fool?"

He had just shifted into second, and was still accelerating, when another figure sprang up almost in front of the car—a man, waving his arms. He caught a glimpse of the face as the car gained speed. It was the sneak thief.

His conscience was easy about that one, he thought as he drove on. Good riddance! Let the water get him.

Then the horror out of his own childhood welled up in him and he saw the face of the tramp again, in a horrible fantasy. He was struggling in the water, his bloodshot eyes bulging with terror, his gasping mouth crying wordlessly for help.

The driver was stopping the car. He did not dare turn; he backed the car, at the highest speed he could manage. It was no great distance, or else the vagrant had run after them.

The door was jerked open and the tramp lurched in. "Thanks, pal," he gasped. "Let's get out of here!"

"Right!" He glanced into the mirror, then stuck his head out and looked behind. Through the haze he saw it, a lead black wall, thirty—or was it a hundred?—feet high, rushing down on them, overwhelming them. The noise of it pounded his skull.

He gunned the car in second, then slid into high and gave it all he had, careless of the tires. "How we doing?" he yelled.

The tramp looked out the rear window. "We're gaining. Keep it up"

He skidded around a wreck on the highway, then slowed a trifle, aware that the breakneck flight would surely lose them the questionable safety of the car if he kept it up. The little girl started to cry.

"Shut up!" he snapped.

The Nisei boy twisted around and looked behind. "What is it?" he asked in an awed voice.

The tramp answered him. "The Pacific Ocean has broken through."

"It can't be!" cried the driver. "It must be the Colorado River."

"That's no river, Mac. That's the Gulf. I was in a cantina in Centro when it came over the radio from Calexico. Warned us that the ground had dropped away to the south. Tidal wave coming. Then the station went dead." He moistened his lips. "That's why I'm here."

The driver did not answer. The vagrant went on nervously, "Guy I hitched with went on without me, when he stopped for gas in Brawley." He looked back again. "I can't see it any more."

"We've gotten away from it?"

"Hell, no. It's just as loud. I just can't see it through the murk."

They drove on. The road curved a little to the right and dropped away almost imperceptibly.

The bum looked ahead. Suddenly he yelled. "Hey! Where you going?"

"Huh?'

"You got to get off the highway, man! We're dropping back toward the Salton Sea—the lowest place in the Valley."

"There's no other place to go. We can't turn around."

"You can't go ahead. It's suicide!"

"We'll outrun it. North of the Salton, it's high ground again."

"Not a chance. Look at your gas gauge."

The gauge was fluttering around the left side of the dial. Two gallons, maybe less. Enough to strand them by the sunken shores of the Salton Sea. He Stared at it in an agony of indecision.

"Gotta cut off to the left," his passenger was saying. "Side road. Follow it up toward the hills."

"Where?"

"Coming up. I know this road. I'll watch for it."

When he turned into the side road, he realized sickly that his course was now nearly parallel to the hungry flood south of them. But the road climbed.

He looked to the left and tried to see the black wall of water, the noise of which beat loud in his ears, but the road demanded his attention. "Can you see it?" he yelled to the tramp.

"Yes! Keep trying, pal!"

He nodded and concentrated on the hills ahead. The hills must surely be above sea level, he told himself. On and on he drove, through a timeless waste of dust and heat and roar. The grade increased, then suddenly the car broke over a rise and headed down into a wash—a shallow arroyo that should have been dry, but was not.

He was into water before he knew it, hub high and higher. He braked and tried to back. The engine coughed and stalled.

The tramp jerked open the door, dragged the two children out, and, with one under each arm, splashed his way back to higher ground. The driver tried to start the car, then saw frantically that the rising water was up above the floorboards.

He jumped out, stumbled to his knees in water waist-deep, got to his feet, and struggled after them.

The tramp had set the children down on a little rise and was looking around. "We got to get out of here," the car owner gasped.

The tramp shook his head. "No good. Look around you."

To the south, the wall of water had broken around the rise on which they stood. A branch had sluiced between them and the hills, filling the wash in which the car lay stalled. The main body of the rushing waters had passed east of them, covering the highway they had left, and sweeping on toward the Salton Sea.