Spoiler Alert: Do not read on if you have not yet seen Season 3, Episode 9 of HBO's "Game of Thrones," "The Rains of Castamere."

"Game of Thrones" fans were left in various stages of shock, grief and outright anger after Sunday's episode, "The Rains of Castamere." The episode featured a bloody event nicknamed "The Red Wedding" that saw Catelyn Stark (Michelle Fairley), her son Robb (Richard Madden), Robb's wife Talisa (Oona Chaplin) and their unborn child murdered by the treacherous Frey family.

Naturally, the actors were just as devastated as the fans at having to leave the show (Madden told reporters that he cried all the way back to London after filming his death scene) and Fairley admitted that filming the Red Wedding left her "completely exhausted -- I've never felt anything like it in my life."

Showrunners David Benioff and Dan Weiss said that they attempted to contact Fairley after she wrapped filming to see if she was OK, with Weiss telling EW: "We tried to call Michelle afterwards. She wasn’t answering. A week later she wrote an email saying, 'Sorry I haven’t been able to talk to anybody about the show for the past week because I’ve been so shattered.'"

Fairley revealed that she couldn't answer the executive producers' call during an interview with EW: "It’s incredibly emotional. And Dan Weiss had left me a voice-mail and I did try to ring him back but by the end of the day I was a walking shell."

Fairley and Madden have now joined a small but ever-growing group of beloved "Game of Thrones" characters who have been killed off, but Fairley told Vulture that they've yet to arrange a meeting with the show's first major casualty, Sean Bean, who was killed off in the ninth episode of Season 1. "Funny enough, I bumped into Sean about a month ago in London, and it was fantastic to see him, actually," she said. "I mean, I hear his voice constantly because he does so many voice-overs on television, and then he pops into your mind whenever you hear his voice. He's a lovely guy. But we haven't yet formed the dead 'Game of Thrones' club. [Laughs] The Dead Characters Club. I think we might just have to! There will be a massive influx after Episode 9! The numbers will go up substantially."

What did you think of The Red Wedding? Were you sad to see Catelyn and Robb go? Sound off below!

"Game of Thrones" airs Sundays at 9 p.m. ET on HBO.

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