DAN MALLORY PUNCHED a control-key savagely, felt the Libra shake itself into a slightly changed curve, turned to his superior. “I’m not so sure of that, sir. Oh, I’m not trying to defend Lady Alice. Earth’s Intelligence officers don’t make mistakes—not mistakes of that magnitude, anyway. But there are other passengers I don’t trust. Lemming. Wilmot. Dr. Bonetti. Why are they aboard the Libra? Why were they so excited when they heard we’d received a message from Lunar III? Suppose one of them is also a spy?” “Or suppose,” said the skipper, “one of them bears the secret of the new ray weapon. Wouldn’t that one naturally be excited?” “But the others?” Mallory inquired. “I don’t know. You may have something there, Daniel. I’m still taking no chances. I’ve put Aiken on guard at Lady Alice’s

