Read "Operation Terror" by Murray Leinster online for free on Textopian. Full text with search, annotations, highlights, and AI-powered reading aids.
"The evidence," said Lockley as Jill looked at him ashen-faced, "the evidence is all for monsters. But there was something in that broadcast that calls for courage, and I want to summon it. We're going to need it."
"If they aren't monsters," said Jill in a stricken voice, "Then -- then they're men. And we have a cold war with only one country, and they're the only ones who'd play a deadly trick like this. So if they aren't monsters, in the ship, they must be men, and they'd kill anybody who found it out."