The second and concluding part of this series deals with the continued political machinations of Eudokia and Pyre, resulting inevitably with bloody confrontation with Those Above. The characters are developed further and the second part of the book is full of double-crossings and betrayals. Some of the main characters die in the conflict, other survive. It's a bit reminiscent (100 years this week) of elements of the Russian Revolution (Lenin, Trotksy, the Romanovs).
It's not really clear till the end which side will prevail - a valuable addition to the plot.
Quite good but violent and perhaps depressing.