In ancient Egypt, the immensely wealthy Roman Publuis Sabinus Lucius embarks on a journey through Egypt, traveling up the Nile from Alexandria to Memphis, past the Sphinx and the pyramids of Giza, and eventually beyond the cataracts to Ethiopia. His large entourage includes, among others, his uncle Catullus, who lives off his nephew’s fortune; his slave and tutor Thrasyllus; the young African slave Tarra; and the Greek slave Cora. Cora...