Josan has been working as a lighthouse keeper ever since a fever nearly destroyed him. At first, the solitude was a welcome chance to recover. But when an assassin tries to kill him, he wonders if his posting was more than that and sets off to find the answers.
Ysobel is the new trade ambassador to Ikaria, but her purpose is twofold: make lots of profit and feed the dim fires of rebellion that had flared once six years ago and been brutally crushed. Her task isn't easy, for the severe retribution from the original rebellion has left most of the city unwilling to risk crossing the empress. But she is determined to succeed.
Of the two, Josan's story grabbed me more, though Ysobel provides a lot of the historical and political background for the hotbed Josan eventually trips over. Josan's intelligence is tempered by a simple soul. He can't understand why strange things keep cropping up in his mind and body, things unsuited for the monk he knows he is. The answers, of course, are enough to make him question whether the truth is always the best thing.
On the other hand, Ysobel's intelligence is matched (or surpassed) by her ruthlessness. She has her own standards, but not much soul. It was frustrating that she didn't just abandon the clear folly of trying to incite rebellion and go about her ultimate goals a different way.
Other minor things bothered me: Josan's twice mistaking the way men look at him as wanting to sleep with him (the Brethren take a vow of chastity, which conflicts with Josan's brief observations of homosexual relations---either you took a vow of chastity or you didn't. The implications weren't clear enough to determine if the Brethren under vows are sleeping together, but why even bring it up? Surely there was some other way he could interpret their glances). Torture was relied on as an infallible way of getting correct information out of people (a common mindset, but it's working on the assumption that people in pain will tell the truth instead of anything they can think of that might stop the pain). The setting was weak; the city in particular lacked detail that might give it character or a sense of place.
Overall it wasn't a bad read but I find myself not terribly interested in the sequel. The pace was good, the intrigue and mysteries worked well together, but the characters never really engaged me except for Josan himself. I rate this book Neutral.