June 15th sheet.

He staggered to his own desk and stared unseeingly at the morning's mail. It had not even been opened yet, but he knew that the Factory Distributors envelope contained an order for twenty thousand feet of the new acoustic tile, and the one from Finebeck & Sons was a complaint.

After a long while, he forced himself to open them. They were.

By lunchtime, driven by a desperate sense of urgency, Burckhardt made Miss Mitkin take her lunch hour first—the June-fifteenth-that-was-yesterday, he had gone first. She went, looking vaguely worried about his strained insistence, but it made no difference to Burckhardt's mood.

The phone rang and Burckhardt picked it up abstractedly. "Contro Chemicals Downtown, Burckhardt speaking."

The voice said, "This is Swanson," and stopped.

Burckhardt waited expectantly, but that was all. He said, "Hello?"

Again the pause. Then Swanson asked in sad resignation, "Still nothing, eh?"

"Nothing what? Swanson, is there something you want? You came up to me yesterday and went through this routine. You—"

The voice crackled: "Burckhardt! Oh, my good heavens, you remember! Stay right there—I'll be down in half an hour!"

"What's this all about?"

"Never mind," the little man said exultantly. "Tell you about it when I see you. Don't say any more over the phone—somebody may be listening. Just wait there. Say, hold on a minute. Will you be alone in the office?"

"Well, no. Miss Mitkin will probably—"

"Hell. Look, Burckhardt, where do you eat lunch? Is it good and noisy?"

"Why, I suppose so. The Crystal Cafe. It's just about a block—"

"I know where it is. Meet you in half an hour!" And the receiver clicked.

he Crystal Cafe was no longer painted red, but the temperature was still up. And they had added piped-in music interspersed with commercials. The advertisements were for Frosty-Flip, Marlin Cigarettes—"They're sanitized," the announcer purred—and something called Choco-Bite candy bars that Burckhardt couldn't remember ever having heard of before. But he heard more about them quickly enough.

While he was waiting for Swanson to show up, a girl in the cellophane skirt of a nightclub cigarette vendor came through the restaurant with a tray of tiny scarlet-wrapped candies.

"Choco-Bites are tangy," she was murmuring as she came close to his table. "Choco-Bites are tangier than tangy!"

Burckhardt, intent on watching for the strange little man who had phoned him, paid little attention. But as she scattered a handful of the confections over the table next to his, smiling at the occupants, he caught a glimpse of her and turned to stare.

"Why, Miss Horn!" he said.

The girl dropped her tray of candies.

Burckhardt rose, concerned over the girl. "Is something wrong?"

But she fled.

The manager of the restaurant was staring suspiciously at Burckhardt, who sank back in his seat and tried to look inconspicuous. He hadn't insulted the girl! Maybe she was just a very strictly reared young lady, he thought—in spite of the long bare legs under the cellophane skirt—and when he addressed her, she thought he was a masher.

Ridiculous idea. Burckhardt scowled uneasily and picked up his menu.

"Burckhardt!" It was a shrill whisper.

Burckhardt looked up over the top of his menu, startled. In the seat across from him, the little man named Swanson was sitting, tensely poised.

"Burckhardt!" the little man whispered again. "Let's get out of here! They're on to you now. If you want to stay alive, come on!"

There was no arguing with the man. Burckhardt gave the hovering manager a sick, apologetic smile and followed Swanson out. The little man seemed to know where he was going. In the street, he clutched Burckhardt by the elbow and hurried him off down the block.

"Did you see her?" he demanded. "That Horn woman, in the phone booth? She'll have them here in five minutes, believe me, so hurry it up!"

lthough the street was full of people and cars, nobody was paying any attention to Burckhardt and Swanson. The air had a nip in it—more like October than June, Burckhardt thought, in spite of the weather bureau. And he felt like a fool, following this mad little man down the street, running away from some "them" toward—toward what? The little man might be crazy, but he was afraid. And the fear was infectious.

"In here!" panted the little man.

It was another restaurant—more of a bar, really, and a sort of second-rate place that Burckhardt had never patronized.

"Right straight through," Swanson whispered; and Burckhardt, like a biddable boy, side-stepped through the mass of tables to the far end of the restaurant.

It was "L"-shaped, with a front on two streets at right angles to each other. They came out on the side street, Swanson staring coldly back at the question-looking cashier, and crossed to the opposite sidewalk.

They were under the marquee of a movie theater. Swanson's expression began to relax.

"Lost them!" he crowed softly. "We're almost there."

He stepped up to the window and bought two tickets. Burckhardt trailed him in to the theater. It was a weekday matinee and the place was almost empty. From the screen came sounds of gunfire and horse's hoofs. A solitary usher, leaning against a bright brass rail, looked briefly at them and went back to staring boredly at the picture as Swanson led Burckhardt down a flight of carpeted marble steps.

They were in the lounge and it was empty. There was a door for men and one for ladies; and there was a third door, marked "MANAGER" in gold letters. Swanson listened at the door, and gently opened it and peered inside.

"Okay," he said, gesturing.

Burckhardt followed him through an empty office, to another door—a closet, probably, because it was unmarked.

But it was no closet. Swanson opened it warily, looked inside, then motioned Burckhardt to follow.

It was a tunnel, metal-walled, brightly lit. Empty, it stretched vacantly away in both directions from them.

Burckhardt looked wondering around. One thing he knew and knew full well:

No such tunnel belonged under Tylerton.

here was a room off the tunnel with chairs and a desk and what looked like television screens. Swanson slumped in a chair, panting.

"We're all right for a while here," he wheezed. "They don't come here much any more. If they do, we'll hear them and we can hide."

"Who?" demanded Burckhardt.

The little man said, "Martians!" His voice cracked on the word and the life seemed to go out of him. In morose tones, he went on: "Well, I think they're Martians. Although you could be right, you know; I've had plenty of time to think it over these last few weeks, after they got you, and it's possible they're Russians after all. Still—"

"Start from the beginning. Who got me when?"

Swanson sighed. "So we have to go through the whole thing again. All right. It was about two months ago that you banged on my door, late at night. You were all beat up—scared silly. You begged me to help you—"

"I did?"

"Naturally you don't remember any of this. Listen and you'll understand. You were talking a blue streak about being captured and threatened, and your wife being dead and coming back to life, and all kinds of mixed-up nonsense. I thought you were crazy. But—well, I've always had a lot of respect for you. And you