M. A. T. Blackthorne

Mark's world is turned upside down by a singular dream. In the waking world, he tries to ignore the changes that are taking over his oldest sister, Gretchen, but the growing threat of the Dream Snatcher forces him to take action. Mark enlists the help of his brother, Jacob, and a mysterious girl named Adrienne. Together, they unravel the clues that lead to the Dream Snatcher's ultimate goal: The Black Satellite.