'Game of Thrones' fans are blessed not only by the frequent involvement of 'A Song of Ice and Fire' creator George R.R. Martin with the series, but also the fervent faith through which many of the books events are adapted for live-action.  Still, every so often moments from the book come up that have both Martin, as well as HBO itself a bit nervous about its execution, so what upcoming story is the legendary creator dreading bringing to the screen?

It seems to happen just about every season that one of his own stories gives 'Game of Thrones' creator George R.R. Martin cause for concern when it comes to adapting for the HBO series.  For season 2, Martin had expressed trepidation that the epic battle of "Blackwater" could be done on a limited budget, but season 3 concerns focus less on the financials, and more on sheer brutality.

Speaking at Comic-Con 2012, George R.R. Martin wouldn't go into specifics of what season 3 (or 4, depending on how Martin's third novel 'A Storm of Swords' is divided) story has him nervous, but he did offer a pointed description:

I don't know that the word 'looking forward to' is the word I want, but I'm anticipating, but also dreading a certain event with the initials R.W., and that's all I can say about it.

Well, fortunately for us, we were able to crack that code.  YOU ARE WARNED that if you don't want any MAJOR SPOILERS to interfere with your enjoyment of either 'Game of Thrones' season 3 or 'Game of Thrones' season 4, this here's your port of harbor.  We make no illusion of this.  GO AWAY NOW, TO AVOID SPOILERS.

"R.W." refers to a catastrophic event of 'A Storm of Swords' known as "The Red Wedding," in which Robb Stark's marriage to Jeyne Westerling is brutally cut short by an attack from the Freys, killing both Robb himself and his mother Catelyn Stark, as well as the majority of their bannermen.

Of course, it remains to be seen if HBO or executive producers D.B. Weiss and David Benioff will choose to go through with the storyline, and if so in what season they'd place it.  Either way, George R.R. Martin previously described the event as "the hardest thing he's ever written," and clearly isn't eagerly anticipating its inclusion in the HBO series.

Hey, at least we've got all those new characters to focus on in the meantime!  So what say you?  Do you think HBO will go through with "R.W.," giving George R.R. Martin reason to dread  What book event are you most looking forward to 'Game of Thrones' covering?  Sound off in the comments below!