"Come back inside," a crisp voice said.

He turned numbly. A man stood on the porch, behind him, hands on his hips. A small man, hollow-cheeked. Eyes small and bright, like two black coals. He wore a uniform different from the soldiers'. His mask was pushed back, away from his face. His skin was yellow, faintly luminous, clinging to his cheekbones. A sick face, ravaged by fever and fatigue.

"Who are you?" Tim said.

"Douglas. Political Commissioner Douglas."

"You're – you're the police," Tim said.

"That's right. Now come inside. I expect to hear some answers from you. I have quite a few questions."

"The first thing I want to know," Commissioner Douglas said, "is how this house escaped destruction."

Tim and Mary and the children sat together on the couch, silent and unmoving, faces blank with shock.

"Well?" Douglas demanded.

Tim found his voice. "Look," he said. "I don't know. I don't know anything. We woke up this morning like every other morning. We dressed and ate breakfast -"

"It was foggy out," Virginia said. "We looked out and saw the fog."

"And the radio wouldn't work," Earl said.

"The radio?" Douglas's thin face twisted. "There haven't been any audio signals in months. Except for government purposes. This house. All of you. I don't understand. If you were geeps -"

"Geeps. What does that mean?" Mary murmured.

"Soviet general-purpose troops."

"Then the war has begun."

"North America was attacked two years ago," Douglas said. "In 1978."

Tim sagged. "1978. Then this is 1980." He reached suddenly into his pocket. He pulled out his wallet and tossed it to Douglas. "Look in there."

Douglas opened the wallet suspiciously. "Why?"

"The library card. The parcel receipts. Look at the dates." Tim turned to Mary. "I'm beginning to understand now. I had an idea when I saw the ruins."

"Are we winning?" Earl piped.

Douglas studied Tim's wallet intently. "Very interesting. These are all old. Seven and eight years." His eyes flickered. "What are you trying to say? That you came from the past? That you're time travelers?"

The captain came back inside. "The snake is all loaded, sir."

Douglas nodded curtly. "All right. You can take off with your patrol."

The captain glanced at Tim. "Will you be -"

"I'll handle them."

The captain saluted. "Fine, sir." He quickly disappeared through the door. Outside, he and his men climbed aboard a long thin truck, like a pipe mounted on treads. With a faint hum the truck leaped forward.

In a moment only gray clouds and the dim outline of ruined buildings remained.

Douglas paced back and forth, examining the living-room, the wallpaper, the light fixture and chairs. He picked up some magazines and thumbed through them. "From the past. But not far in the past."

"Seven years?"

"Could it be? I suppose. A lot of things have happened in the last few months. Time travel." Douglas grinned ironically. "You picked a bad spot, McLean. You should have gone farther on."

"I didn't pick it. It just happened."

"You must have done something."

Tim shook his head. "No. Nothing. We got up. And we were – here."

Douglas was deep in thought. "Here. Seven years in the future. Moved forward through time. We know nothing about time travel. No work has been done with it. There seem to be evident military possibilities."

"How did the war begin?" Mary asked faintly.

"Begin? It didn't begin. You remember. There was war seven years ago."

"The real war. This."

"There wasn't any point when it became – this. We fought in Korea. We fought in China. In Germany and Yugoslavia and Iran. It spread, farther and farther. Finally the bombs were falling here. It came like the plague. The war grew. It didn't begin." Abruptly he put his notebook away. "A report on you would be suspect. They might think that I had the ash sickness."

"What's that?" Virginia asked.

"Radioactive particles in the air. Carried to the brain. Causes insanity. Everybody has a touch of it, even with the masks."

"I'd sure like to know who's winning," Earl repeated. "What was that outside? That truck. Was it rocket propelled?"

"The snake? No. Turbines. Boring snout. Cuts through the debris."

"Seven years," Mary said. "So much has changed. It doesn't seem possible."

"So much?" Douglas shrugged. "I suppose so. I remember what I was doing seven years ago. I was still in school. Learning. I had an apartment and a car. I went out dancing. I bought a TV set. But these things were there. The twilight. This. Only I didn't know. None of us knew. But they were there."

"You're a Political Commissioner?" Tim asked.

"I supervise the troops. Watch for political deviation. In a total war we have to keep people under constant surveillance. One Commie down in the Webs could wreck the whole business. We can't take chances."

Tim nodded. "Yes. It was there. The twilight. Only we didn't understand it."

Douglas examined the books in the bookcase. "I'll take a couple of these along. I haven't seen fiction in months. Most of it disappeared. Burned back in '77."

"Burned?"

Douglas helped himself. "Shakespeare. Milton. Dryden. I'll take the old stuff. It's safer. None of the Steinbeck and Dos Passos. Even a polic can get in trouble. If you stay here, you better get rid of that." He tapped a volume of Dostoevski, The Brothers Karamazov.

"If we stay! What else can we do?"

"You want to stay?"

"No," Mary said quietly.

Douglas shot her a quick glance. "No, I suppose not. If you stay you'll be separated, of course. Children to the Canadian Relocation Centers. Women are situated down in the under-surface factory-labor camps. Men are automatically a part of Military."

"Like those there who left," Tim said.

"Unless you can qualify for the id block."

"What's that?"

"Industrial Designing and Technology. What training have you had? Anything along scientific lines?"

"No. Accounting."

Douglas shrugged. "Well, you'll be given a standard test. If your IQ is high enough you could go in the Political Service. We use a lot of men." He paused thoughtfully, his arms loaded with books. "You better go back, McLean. You'll have trouble getting accustomed to this. I'd go back, if I could. But I can't."

"Back?" Mary echoed. "How?"

"The way you came."

"We just came."

Douglas halted at the front door. "Last night was the worst rom attack so far. They hit this whole area."

"Rom?"

"Robot operated missiles. The Soviets are systematically destroying continental America, mile by mile. Roms are cheap. They make them by the million and fire them off. The whole process is automatic. Robot factories turn them out and fire them at us. Last night they came over here – waves of them. This morning the patrol came in and found nothing. Except you, of course."

Tim nodded slowly. "I'm beginning to see."

"The concentrated energy must have tipped some unstable time fault. Like a rock fault. We're always starting earthquakes. But a time quake… Interesting. That's what happened, I think. The release of energy, the destruction of matter, sucked your house into the future. Carried the house seven years ahead. This street, everything here, this very spot, was pulverized. Your house, seven years back, was caught in the undertow. The blast must have lashed back through time."

"Sucked into the future," Tim said. "During the night. While we were asleep."

Douglas watched him carefully. "Tonight," he said, "there will be another rom attack. It should finish off what is left." He looked at his watch. "It is now four in the afternoon. The attack will begin in a few hours. You should be undersurface. Nothing will survive up here. I can take you down with me, if you want. But if you want to take a chance, if you want to stay here -"