Speculative fiction is a broad umbrella category of narrative fiction referring to any fiction story that includes elements, settings and characters whose features are created out of imagination and speculation rather than based on attested reality and everyday life. That encompasses the genres of science fiction, fantasy, science fantasy, horror, alternative history, and magic realism.
A second prequel to the best-selling Dune continues the trilogy
beginning with Dune: House Atreides and follows the journeys of Leto
Atreides, Bardon Harkonnen, Jessica, Gurney Halleck, and Duncan Idaho.