Producers of popular HBO drama Game of Thrones are set to take legal action against a prominent author for allegedly leaking thousands of pages of plot details available in bookstores around the globe.

The leak, which is said to have occurred somewhere between 1996 and 2011, was uncovered when co-creators David Benioff and D.B. Weiss stumbled upon a series of lengthy documents relating to the show at their local bookstore. The paperback documents, which purport to be written by show guest-writer George R. R. Martin, contain an extensive rundown of the show’s plot, including a wide range of events that occur after the currently airing 3rd Season.

Benioff was furious at the discovery, and said the leak had significantly dampened the impact of the Red Wedding scene from the show’s latest episode, where several major characters are explicitly and repeatedly fisted by one another.

“The Red Wedding is supposed to be this truly harrowing moment of unexpected brutality and pain,” said Benioff. “It was supposed to be a real kick in the gut for our audience. But there were all these people who were like ‘well, I already knew that happened, because I read the book,’ and I was like ‘what?’”

Benioff says he has since purchased the leak documents from his local Barnes & Noble, and is in the process of reading them thoroughly.

He described the leak as “immaculately detailed,” and said there was “no conceivable way” it was an accident.

“This is obviously a carefully planned, concerted effort to spoil the story for fans of the show. There’s no other way to read it.”

Martin says that he will fight the legal action, and maintains it isn’t possible for him to have written the documents, because he’s never read the books and doesn’t know what happens.

“I’ve only seen the TV show,” said Martin. “I’m not really sure why anyone would read the books when they could just watch it on TV with pictures.”

Despite the leaks, Benioff said there was still plenty of reason for those spoiled to watch the show, including “lots of new sex and torture,” and assured viewers that the line between the two becomes increasingly blurred.