"I think it will have more impact if it takes people unexpectedly," Martin is quoted as saying on the website omnivoracious.com. "But certainly that's the scene that both myself and, I think, most of my hardcore fans are looking forward to with a mixture of anticipation and apprehension."
The New York Post said the shocking wedding/battle scene from the series of books is expected to air during the medieval fantasy show's upcoming third season, possibly as its season finale. It involves the marriage of Catelyn Stark's brother, Edmure Tully, to Lady Roslin Frey, daughter of Lord Walder Frey.
Season 3 of "Game of Thrones" is to begin Sunday. Martin is an executive producer on the series.