They had instructed him on Mars to take chances if he must. "I could tell you a thing or two that might give you a better idea," he said slowly. "But it would have to be under security." "Okay by me. Room service can send us up an oath box right now." "What? But—but—" Matheny hung onto himself and tried to believe that he had landed on Earth less than six hours ago. In the end, he did call room service and the machine was trundled in. Doran swallowed the pill and donned the conditioner helmet without an instant's hesitation. "I shall never reveal to any person unauthorized by yourself whatever you may tell me under security, now or at any other time," he recited. Then, cheerfully: "And that formula, Pete, happens to be the honest-to-zebra truth." "I know." Matheny stared, embarrassed, at the carpet. "I'm sorry to—to—I mean of course I trust you, but—" "Forget it. I take a hundred security oaths a year, in my line of work. Maybe I can help you. I like you, Pete, damn if I don't. And, sure, I might stand to get an agent's cut, if I arrange—Go ahead, boy, go ahead." Doran crossed his legs and leaned back. "Oh, it's simple enough," said Matheny. "It's only that we already are operating con games." "On Mars, you mean?" "Yes. There never were any Old Martians. We erected the ruins fifty years ago for the Billingsworth Expedition to find. We've been manufacturing relics ever since." "Huh? Well, why, but—" "In this case, it helps to be at the far end of an interplanetary haul," said Matheny. "Not many Terrestrial archeologists get to Mars and they depend on our people to—Well, anyhow—" "I will be clopped! Good for you!" Doran blew up in laughter. "That is one thing I would never spill, even without security. I told you about my girl friend, didn't I?" "Yes, and that calls to mind the Little Girl," said Matheny apologetically. "She was another official project." "Who?"