Steve Brezenoff 
End User [PDF ebook] 

Twelve-year-old twins Raz and Kiley are headed underground, along with everyone else aboard the asteroid station. Their home is about to pass through a band of deadly space radiation, and in the lower level they’ll be safe. But soon the kids spot ghostly figures flickering in the halls. Rooms suddenly appear abandoned and rundown. Is it just a minor glitch in the computer’s holographic system, as the adults claim, or is something more sinister stirring? This exciting illustrated story will take young sci-fi fans to the outer reaches of the universe … and into their darkest fears. When the story is finished, read about technology and phenomena featured in the book.