Ancillary Justice, written by Ann Leckie, is a highly acclaimed science fiction novel that has topped the charts on Amazon. The book is set in a future where an empire called the Radch rules over multiple planets. The story follows Breq, a former starship AI who now inhabits a single human body. Breq seeks revenge against the Radch and navigates the complexities of interstellar politics and alien diplomatic relations. Ancillary Justice explores themes of identity, power, and the blurred lines between human and machine. With its intricate world-building and compelling narrative, Ancillary Justice has become a bestseller, captivating readers with its exploration of alien diplomacy in a vast and complex universe.