The slow steps came nearer and the big cadet raised himself on the balls of his feet, ready to spring. When the guard's shadow fell across him, Astro leaped forward like a striking tiger.

The guard didn't have a chance. Astro's arm coiled around his throat and the cry of alarm that welled up within him died down in a choking gasp. Within seconds he was unconscious and the big cadet had dragged him behind the crate. He stripped him of his uniform, bound and gagged him with his own rags, and crammed him into the crate. Then, protected by the helmet and green uniform and carrying the blaster, the cadet stepped out confidently and strode down the lane.

He went directly to the building he had seen Tom and Connel enter, and walked boldly up to the guard lounging in front of the door.

"You're relieved," said Astro in the Venusian dialect. "They want you up in the caves." The cadet had no idea where the caves were, but he knew that they couldn't be near by and it would be some time before an alarm could be sounded.

"The caves?" asked the guard. "Who said so?"

"The chief. He wants you to identify somebody."

"Me? Identify someone? I don't understand." The guard was puzzled. "What section of the caves?"

"The new section," said Astro quickly, figuring there must be a new and an old section because he had heard a guard refer to the old one.

"Up by the jungle tunnels?"