This book capitalizes on the fact that it's a sequel. I thought the first book had a slow opening and a rather iffy third act, however I see now it was just getting the ball rolling.
Now it starts and throws you write in. The people of Atlantis (mainly the delegates and servants) are brilliant, and it doesn't stop once to go over stuff already said in the first book.
However, I do get the feeling that Atlantis was just a bright shiny show to distract you from the main event. It has a bit of a murder-mystery guide going on, and let's just say it's not something Sherlock would bother himself with. No, the true event is with a returning character, and I will say no more on them.
I do think it's a shame that I got distracted by the undercurrent, as the Atlantis bits a brilliant. The author didn't spend much time on the actual summit, but that's fine. Witty humour and dispute their obvious incompetence the villains are just so perfect.
Parting thoughts: read the first book to enjoy this one properly, like I said earlier, it builds on what was written before. A great read.
And just because I know no-one will read this far down-or at all-...