Hell (French: L'Enfer) is a 1908 novel by Henri Barbusse, in which the unnamed narrator peers into a hole in the wall of his hotel room. From the other side, he witnesses lesbianism, adultery, incest, and death. It is only when he feels he has uncovered all the secrets of life that he decides to leave the room for good. But, as he attempts to leave, he is overcome with a backache and blindness. Colin Wilson gave considerable attention to Barbusse's novel in his influential work The Outsider.