Ancillary Justice, written by Ann Leckie, is a critically acclaimed science fiction novel that incorporates alien technology into its gripping narrative. The story takes place in a future where an empire called the Radch rules over numerous planets. The protagonist, Breq, is an artificial intelligence who inhabits multiple bodies and seeks revenge against the Radch. As Breq navigates the complexities of the empire and its alien technology, the novel explores themes of identity, power, and the blurred lines between human and machine. Ancillary Justice is a compelling exploration of alien technology in a futuristic setting.