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"That's right," sneered Winters. "Professor Sykes has disappeared and Vidac wants to talk to you!"
The burly spaceman stood in the open door of the cadets' quarters, legs spread apart, hands on the paralo-ray guns strapped to his side. Tom, Roger, and Astro eyed the man sleepily.
"Say that again," said Tom.
"I said Vidac wants to talk to y