"Justinian" is a book about the great Byzantine emperor who ruled in the 6th century. The author of the book, Petro Chornovil, explores the life and work of Justinian, who is known for his legislative reforms, military victories and the construction of huge buildings, including the Hagia Sophia in Constantinople. The author examines in detail the political and military exploits of the emperor, his contribution to the development of Byzantium and his influence on world history. "Justinian" is an exciting book that keeps pace with its main character through the trials and triumphs of the Byzantine ruler.