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.
Witnessing the beheading of her father by a conquering overlord, a
young baroness pledges revenge despite the new ruler's just ways, and
ingratiates herself to a high position while devising evil plans as a
vampire of souls.