Fittingly, season 4 of Game of Thrones reached its fourth week this past Sunday. A lot has happened in these four episodes. Arya killed another man, Joffrey was poisoned, Sansa was smuggled away by Petyr Baelish, Tyrion was put in prison, the list goes on. The world of Game of Thrones may be one of the worst fictional locales to live in, but at least they keep things exciting there. Youre always on your toes...although if thats because you were strung up and tortured by Ramsay Snow, try to get off your toes when you can and kill that sociopathic bastard. However, this episode was less about excitement and more about setup for the future. With the halfway mark nearing, there were some shakeups with many of the characters. Relationships were challenged, goodbyes were said, governments were overthrown, etc. You know, just another typical week for Westeros and the surrounding countries. However, what made this episode especially notable was its second half. Those who have read the books know that there are some elements in the TV series that are completely original and did not appear in the books. These elements are a good way to keep the readers surprised, but this episode went way past changing character interactions or inserting a minor subplot. Its not an exaggeration to say that the events shown are game-changers not just for the show, but the books as well. Yeah, theyre that big. As usual, this book will only cover events from the TV show, although their will be brief discussion of how certain events will affect the future of the book series. So lets take a look at the 10 things we learned from Oathkeeper.