A few moments later Strong was speeding along the superhighway back toward the city. There was only one thing on his mind—to get the cadets out of the trap they were in. But it would be a hard job. Vidac had witnesses against them. He mentally probed the situation further. Why would Vidac abduct Professor Sykes? Surely not to frame the cadets. He must have wanted to be rid of Sykes too. Sykes must have known something. But what? Strong suddenly thought of the professor's investigation of the landing disturbance. It could only have been the result of radioactivity in a large mass. So the professor must have discovered a large deposit of uranium. Strong's mind raced on. Sykes would have taken the report to Vidac or Hardy, or both, and—
Strong forced himself to stop thinking. He was violating one of the cardinal laws of the Solar Alliance. He was presuming that Vidac or Hardy was guilty—and he didn't have an atom's worth of proof. There was only one way to get the proof. The cadets would have to escape to find it.
Strong sidled around the corner of the corridor. Down at the end of the hall, still standing in front of the cadet's door, Bush leaned against the wall, idly picking his teeth. Strong realized that he would have to sneak up behind the guard. He couldn't afford to be seen. He had to wait until Bush turned around.
He waited and watched while the man shifted from one foot to the other. And after what seemed like hours, Bush shifted his position and turned his back on the Solar Guard officer. Strong quickly darted around the corner and ran lightly down the hall. If Bush turned around now, Strong would be frozen stiff by the paralo-ray. With ten feet to go, the captain lunged at Bush in a diving tackle, sending the man sprawling face forward. In a flash he was on top of him, and with a quick snapping blow on the back of the neck he knocked the man cold.
Strong snatched up the paralo-ray gun, then unlocked the door and threw it open. The cadets were sprawled on their bunks, listening to a story spool.
"Captain Strong!" yelled Tom.
"Quiet!" ordered Strong. "You've got three minutes. You'll find a jet car at the side entrance of the building. I can't explain now, but get out of here!"
"But what do you want us to do?" asked Tom. The three cadets were already grabbing their clothes and other items they would need.
"The only way you're going to prove that you didn't abduct or murder the professor is to find him," said Strong. "And pray to your stars that he's still alive. If he isn't, it'll be up to you to find out who killed him!"