Cassie believes that she is Agent First of Spies and Liars, daughter of the former General-Overseer of the 14th Western Host of Air and Darkness, who is now the All-Highest of the Morningstar Empire (or what remains of it, all other claimants to that status having been crushed by the ancient horrors that ate the moon). But at the same time she is also Cassiopeia Brewer,