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.
After arriving in a warped version of 19th-century Paris, the Doctor is
arrested. Something is very wrong with this Paris – not least the fact
that the sinister figure holding the city in his power is the son of
the infamous Marquis de Sade.