“But they don’t intend to be interfered with. They’re watching us, boss. They’ve got to. We’ve got atomic power. We’re about to have rocket ships. They’re worried about us. And Everest is the only place they can watch us from!”

I frowned deeper. He was sweating and his hands were shaking.

I said, “Easy, boy. Take it easy. What on Earth are these creatures?”

And he said, “What do you suppose would be so adapted to thin air and subzero cold that Everest would be the only livable place on Earth to them? That’s the whole point. They’re nothing at all on Earth. They’re Martians.”

And that’s it.