Saramago tells the story of a history professor that, by chance, discovers in a rented movie a man identical to him, and decides to go in search of him. This novel poses the essential questions of life and the search of one’s own identity: What defines us as unique people? Can we assume that our voice, our characteristics, or even the smallest distinctive mark are not repeated in another person? In this book, Saramago once again explores the depths of the soul.