Don't go anywhere near this book unless you're caught up on the series. (A Million Open Doors, Earth Made of Glass, The Merchants of Souls) Earth Made of Glass especially has significant bearing on the events here.
The book starts off with spy/agitator/troubador Giraut Leones performing a concert in celebration of his 50th birthday, and nearly getting killed in the process. Many more assassination attempts follow. It seems like the plot moves along less in this volume than in the previous volumes. The dust jacket claims that this is the "Climactic Conclusion" of the series, but if so, it's a pretty unlikely conclusion if you ask me. But I never believe a word I read on a dust jacket anyway.