The 'House of the Dragon' Season 3 finale put the First Battle of Tumbleton on screen for the first time, but HBO's version diverges sharply from George R.R. Martin's 'Fire & Blood', from who lives and dies to where key characters are placed.
Book readers will recognise the broad strokes: a Dragonseed betrayal, the destruction of Tumbleton and a brutal clash between Blacks and Greens. Yet the series reshapes character arcs, alters deaths and shifts the timing of major moments, creating a finale that feels familiar in outline but increasingly unpredictable in detail.
