7 Abandoned Game Of Thrones Plotlines
3. The Tullys
When last we saw Edmure and Brynden "Blackfish" Tully they were guests at the infamous Red Wedding, with the latter leaving to relieve himself by a tree and Edmure being ushered outside to consummate his marriage to the one pretty Frey girl in the Seven Kingdoms.
When the bloody carnage was over, Walder Frey and Roose Bolton had a conversation that shed some light on what became of Catelyn's brother and uncle. It seems Edmure could now be found in the dungeon, while the Blackfish had managed to escape. That was back in Season 3, and - you guessed it - we haven't so much as heard their names mentioned since.
In the books, the Lannister forces lay siege to Riverrun and Jamie shows up to negotiate with the Blackfish, but with the TV version of the Kingslayer currently in Dorne, that seems unlikely to happen any time soon. It's almost certain that the Blackfish and his kin would want justice for what happened at the Red Wedding, so if the Tullys do resurface there's a good chance it'll be to swing their swords at the bug-eyed heads of the Freys. They've had two seasons to plot their revenge though, so get your arses in gear, lads.