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 sequel to The Disinherited finds the U.S. Space Force confronting
the complexities of ultralight drives, alternative universes, and an
alliance with King Arthur.