“Age of Darkness” by Christian Dunn is a science fiction novel published by Games Workshop in 2011 as part of the Horus Heresy series. The book is written in English and falls under the genres of action & adventure, space opera, military, and general science fiction. With a mass market paperback format and 416 pages, the novel promises an immersive and thrilling experience for fans of the space-faring adventures in the Horus Heresy universe.