I read incarceron and the characters were well-developed and the plot line was fairly original. It really delved into the darker side of human nature versus what people expect of you. It was pretty good.
It's one of my kegemaran buku of all time :) It's a dark Fantasi with a lot of action and clever plots and schemes. The characters are all extremely well-developed, real, vivid and multi-dimensional, and nobody is who they first appear (except perhaps Caspar...)