Catelyn Stark is dead. Dead as a dodo, a doornail, her son Robb, her husband Ned, Sansa's wolf, Geoffrey... We could go on but you get the idea. So why were Game of Thrones fans (mainly those who had read the series) so irritated by the lack of one major feature in the finale of season four?
So Catelyn was killed at the Red Wedding when her throat was cut by Reymund Frey. Her body was then thrown into the river and three days later Beric Dondarrion and Thoros of Myr discover her washed up corpse.