A major standalone space opera, this is Garth Nix's first novel for older readers since the conclusion of the }Old Kingdom{ trilogy! This action adventure spans galaxies and lifetimes, and follows Prince Khemri as he trains to become a Prince of the Empire, an enhanced human being, equipped with biological and technological improvements. Which is just as well, as he soon finds out there are a million princes, and all of them want each other dead, because there can only be one Emperor!