The Causal Angel

Well, that was a roller coaster of a journey, with Jean le Flambeur, through the eccentric universe of the Zoku, Sobornost, and the Oort. As for the ending - I may need to read that bit again - it requires a bit more quantum processing. Of the whole trilogy I enjoyed this book less than the previous two.

However, overall, it is probably one of the best hard SF trilogies I have read. The author has a scientific background and it shows in the science that is described in the novels. It can be mind bogglingly difficult to follow.

Great stuff!