Sergey and Marina Dyachenko are Ukrainian science fiction and fantasy authors who transitioned from acting and psychiatry to full-time writing after 2005. They collaborate closely, with Marina previously an actress and Sergey an ex-psychiatrist. Their writing style blends elements of science fiction and fantasy, often exploring complex philosophical themes and dystopian scenarios. Together, they have authored over 28 books and numerous screenplays and short stories, receiving recognition for their work including the Award for BestAuthors(Eurocon 2005) and Prix Planete SF des blogueurs (2020). Sergey Dyachenko passed away in 2022, but their collaborative work continues to be produced.










