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  ===Writing===
  "Blackwater" was scripted by the author of the original saga: George R. R. Martin.
  The episode was written by George R. R. Martin, the author of the ''A Song of Ice and Fire'' novels on which the series is based. For this episode Martin adapted material from chapters 58 to 63 (Sansa V, Davos III, Tyrion XIII, Sansa VI, Tyrion XIV, and Sansa VII) of his novel ''A Clash of Kings''. Martin said that "Blackwater" was much harder to write than the episode he wrote for the show's first season, "The Pointy End", because he was forced to weigh budget restrictions against the huge scope of the battle he described in the novels.