Redwood: Twelver

Along the Janus String, which connects ever more distant planets from Old Earth, exploration has stalled out on Redwood, a world filled with giant trees and animals. The State has prohibited colonization, and human activity is limited to a one square kilometer city.

Marcus Savitch, a Servant of the State, suffers from hematophagia, a condition requiring him to feed on blood. He finds himself in the midst of a revolution against the State throughout the string.

Following the revolution, Marcus and his friends travel to New Texas. There, the remnants of the State send terrorists and assassins to wreak havoc on their campus. Marcus fights back with help from the Corps of Cadets, and a secret society named 12 reaches out to offer assistance.

But the State's biggest secret involves a cryptic message from Old Earth.