Differences between books and TV series - Season 3

Valar Dohaeris

 * Sam is on the Fist of the First Men during the White Walker/Wight attack.
 * Ghost is not present during the battle, he's with Jon Snow.
 * ​Sam did send out the ravens.
 * ​The remaining brothers of the Night's Watch were all on horseback after their escape.
 * In the novels, Giants wear no clothing, they are covered in shaggy fur pelts like mammoths.
 * Jon does not kneel before Tormund.
 * ​Jon gives a very different reason as to why he wants to join the Wildlings, involving his bastardy and upbringing in Winterfell.
 * Tywin visited Tyrion many times while he was unconcious.
 * Davos was stranded on a tall spire of rock, not a connical island.
 * Davos was rescued by one of Saan's captains, not Saan himself.
 * ​Neither Catelyn nor Robb went to Harrenhall.
 * Qyburn was not part of Robb's army.
 * Petyr never approached Sansa directly with his offer of escape, but acted through an intermediary.
 * Davos was not taken to see Stannis for months, he was thrown in the dungeon almost the moment he set foot on Dragonstone.
 * ​The scene where Margaery comforts the orphans does not happen in the book.
 * ​The dinner scene with the Tyrells and Lannisters does not happen in the book.
 * Astapor is consrtucted of crumbling red bricks in the novels.
 * ​The assassination attempt on Daenerys is made back in Qarth, before she leaves for Astapor. It is also not made by the Warlocks, but by a Qartheen guild of assassins known as the Sorrowful Men.
 * Ser Barristan​ does not reveal his identity until much later in the book.

​See also:

 * ​Differences between books and TV series - Season 1
 * Differences between books and TV series - Season 2