Revenge for the Red Wedding could finally be doled out in heaps.
One of the Red Wedding's perpetrators, Roose Bolton, met a bloody end thanks to his son, Ramsay. Hopefully we’ll see the rest of this theory come true in the finale — Walder Frey deserves it.
Original Theory: A brief glimpse at a Frey wedding — with Lannister soldiers in attendance, no less — during a season preview was enough to send the internet into a tizzy about Stark vengeance for the Freys' bloody betrayal. Some believe that Arya Stark will return to the Twins to exact revenge on Walder Frey herself, while others believe that vengeance could come in the form of Jaime Lannister or one of Lord Walder's resentful kin. Either way, it's about time that justice was served.