Over a three-year period in the late Eighties, Octavia Butler wrote one of the most interesting and thoughtful sci-fi trilogies around. Lilith’s Brood, which consists of Dawn (1987), Adulthood Rites (1988) and Imago (1989) is a fascinating look at interspecies cooperation and co-habitation, as well as a study of humanity, our weaknesses and potential downfalls.