The book ‘Cadet’ is written by Catherine Beery. ‘Cadet’ is the 1st book in the ‘Defender of the Empire’ series, and it is a science fiction novel, it is set in the Spectral Empire, a galactic empire governed by the Twenty-Five Prime Worlds. In the story, the character, Rylynn Sinclair of Colony Lenti, trades her life for the chance of escape for her group when they’re in danger.