A Storm of Swords
"Breaker of Chains" was written by executive producers David Benioff and D. B. Weiss, based upon the source material, Martin's "A Storm of Swords". The controversial Jaime-Cersei scene was adapted from chapter 62 of "A Storm of Swords" (Jaime VII). Other content came from chapters Sansa V, Tyrion IX and Daenerys V.