Double Cross

In this second installment of Brouwers series Tyce has to figure out whatsreally behind strange black boxes that show up on Mars after a quake. Then hemust stop... » 

In this second installment of Brouwers series Tyce has to figure out whatsreally behind strange black boxes that show up on Mars after a quake. Then hemust stop a deadly comet from destroying the planet and all those living on it.Can Tyce learn to pilot a test space vehicle in enough time to stop the comet? «