Iron Gold I (Red Rising, #4 part 1)

Iron Gold is a 2018 science fiction novel by American author Pierce Brown, the first of a trilogy which continues the story of his Red Rising trilogy (2014–2016). Iron Gold takes place ten years after the events of Morning Star (2016), with Darrow "The Reaper" of Lykos and Virginia "Mustang" au Augustus leading the new Solar Republic. It is followed by Dark Age (2019).