Dan Simmons was an American science fiction and horror writer. He was the author of the Hyperion Cantos and the Ilium/Olympos cycles, among other works that span the science fiction, horror, and fantasy genres, sometimes within a single novel. Simmons's genre-intermingling Song of Kali (1985) won the World Fantasy Award. He also wrote mysteries and thrillers, some of which feature the continuing character Joe Kurtz.