Meet Dr. Marc Vanel, son of a scientist and a beautiful exotic spy, polymath, engineer, gifted with prodigious strength and intelligence, trained by the Brahmins of India. When Vanel acquires the power of invisibility, he becomes Homo-Deus, invisible but for his emerald green eyes, haunting the dreams of evil men and lovely women alike. Felicien Champsaur's Homo-Deus (1924) is a ground-breaking novel which combines biomedical and superhero speculative fiction. It is a milestone in the evolution of the superhero, dealing with its fundamental problem: to what extent a person who can act with total impunity is likely to admit any constraints stemming from morality? Also included in this volume are Champsaur's sequel, Kill the Old, Enjoy (1925), a brutal but honest look at the moral disintegration of society after World War I, and an afterword by Brian Stableford.