lmost at once, something clapped down around him, and the pressure let up, while heat seemed to leap into the rocks under his feet and make them comfortable. He gulped down the air that somehow seemed to stay close to him, instead of evaporating into the vacuum.

The moon! Now they had him!

Fear blazed in him—a stark, unreasoning terror that was like a physical thing. Run—but you can't run! They've got you! You can't escape!

The light blotted out, and then snapped on, more strongly. He stood in the kitchen of the cold-water apartment, still naked, with bits of chalky dust between his toes.

He had no time for reason. His brain seemed to have jumped over a hurdle and come down in a puddle beyond, foul with the stuff it had found there. He heard Ellen shriek, and then cry out again.

He lurched into the bedroom, while she let out another gurgling cry as the light showed him in the doorway. She came out of the bed, leaping for him, crying his name—cold sober! But he wanted none of her act. He shook her off.

"You damned alien! You filthy monster, disguised as a girl! When you get in a spot where I'm sure to find you out, you have a cute trick up your sleeve—but it won't work. You can send me back there—back to the rest of your kind, from wherever they came. But you won't fool me into thinking you're human again. You can't pass one test!"

He wouldn't be fooled into thinking it was a dream, either. He'd been physically on the moon—the very dust on his feet proved that. They might drive him insane, but they wouldn't do it that way.