The Best Book I read in 2011

This recommendation is a tiny bit complicated, as its kind of not just for one book, but for three. The book I'm recommending is the last of a trilogy, and you really should read the first two. Interestingly I almost didn't get to the 2nd one. I think I downloaded it mainly cos I needed something to read, and I was going to be out of wifi range in a moment... Needless to say, I read it, liked it, got drawn along to the 3rd one...

I'm currently in the very early days of writing a long series of books, and so I have especial admiration for what the author of this one has done, really achieving a spectacular climax and answering a ton of questions.
What's the book?

City of Glass (Incidentally, full props to the guys who made this trailer, so imaginitive... )

I'm trying to keep this as spoiler free as possible, but apologies in advance if I give anything away, or tell you something I didn't think was obvious.

So in CoG the Mortal Instruments saga moves to Alicante - long time home of the Shadowhunters. And that makes a nice change. It's fantasy, without being too fantastic. I only have two quibbles, the first is with Venice-like canals, somehow halfway up a hill, the second is that though the setting is a massive confrontation between all the most important supernatural beings in the world, how come 99% of them are from New York? Including practically all the werewolves and vampires?

But that's picky. The Jace/Clary issues are resolved beautifully and Cassandra Clare plays her trump card - the revelation of the angels - with massive style. There's even a little hook left for us into another sequel - a good thing, considering hoe badly everybody wanted City of Fallen Anegls.
So there you have it, heroism, romance, drama, violence. Recommended to everyone.