This fantasy novel takes place in a made-up world and that's as far as the fantasy element goes. Apart from that, this could be a novel about politics, power. Manipulation and betrayal (thus the title). Baru decides to get her revenge on the Masquerade by infiltration and manipulation from within with deadly results fro anyone in her proximity. There are a whole bunch of interesting characters, al well-developed and the plot is long but quite engaging. Scenes of battle complete the novel. It's quite good but I don't think that I'm suitably bothered about finding out what happens in the next book.