This book in the series feels like an intermission. We're just hanging around in the Mirador and there are a bunch of little, non-urgent mysteries being pursued by way of plot. You kind of figure that, seemingly unrelated, they'll all come together somehow, and they do, but not until the very end, when crash-bang-boom everything blows up in Felix's face without much build up. The plot under the plot is about how Mildmay and Felix, the Master Non-Communicators, gain a bit more insight into themselves and their brotherly relationship, but advancement in that one is doled out so sparingly, it sometimes seems barely there. So, I for one am happy we are about to leave Melusine behind in the next installment.