The 3rd book of the Song of Ice and Fire... well, to be short: Everybody Dies (to quote the last House M.D. Episode's title).
There is still the "war of the five kings" going on in Westeros (with only 4 kings remaining). King's Landing is attacked, but can be defeated by a newly founded alliance between Lannisters and Tyrells.
The Night Watch meanwhile has to face Mance Ryder and his wildlings who march against the Wall. Jon has to play a turncloak in order to find out, whether the wildlings already found the horn of winter.
Jaime is escorted to King's Landing by Brienne of Tarth - so he can be exchanged against Sansa Stark. But Sansa has other problems (including a marriage). Her brother Bran discovers his third eye and seeks for somebody who tells him how to best use his talent. Arya needs to adapt herself to various situations, always pretending not to be the Stark she is. Daenerys on the other part of the world starts building a new empire, using her dragons to win people over to her side.
I still like GoT, but somehow the story grows longer and longer, and there is not too much happening. All the same, it still stays thrilling - at least for some characters, while others... well, not everyone can have an interesting live for everyone, so I think that's ok.
The 3rd part has the air of Death around it, really, most of the important persons die, some expectantly, for for others it really came as a surprise.
I already started with the 4th volume (A feast of Crows), and am one fifth through. I award 6 out of 10.