"A devious plot threatens to overtake the spaceship Moon Racer as Tyce, Ashley, and the crew near the end of their six-month journey from Mars to Earth. Who's the rebel mastermind? Could it be one of the six other people on board? In a race against time Tyce must find out or the Moon Racer--and everyone aboard--is doomed to crash into the sun!"--P. [4] of cover.