In book 3 of the trilogy, the archangel Raphael, who has already been somewhat diminished by his involvement with mortals, in particular the now deceased Damiano, is stripped of his wings and powers by his brother Lucifer, in return for releasing the Finnish witch Saara from Lucifer's torments. He is then sold into slavery in Moorish Spain and has to gradually come to terms with his new condition. This is only possible with the somewhat bullying help of a Berber woman, Djoura, who is a fellow slave but refusing to be cowed.
The situation is made more tricky because Raphael has been sold to a Arab trader who only deals in women and eunuchs, so Djoura tries to conceal the fact that Raphael is not a eunuch, getting little co-operation from him since he fails to understand the danger in which this places him or that the least punishment if found out will be castration. Djoura manages to engineer that they be sold together, but one of their new master's pregnant wives is very taken with Raphael and takes all kinds of liberties with him in the mistaken belief that he is not 'entire'.
Meanwhile Saara joins forces with Gaspare, Damiano's former manager and sort-of friend, helped by occasional appearances by Damiano's spirit - who is also giving Raphael moral support, but due to his ephemeral nature cannot tell them where Raphael is held prisoner. They launch an assault on Lucifer's lair to find out, and meet a black dragon - which is obviously the title character from MacAvoy's first published novel, Tea with the Black Dragon. The perils for both sets of characters escalate and the suspense is provided by the looming peril to the former archangel.
As before, the book is beautifully written, there are philosophical conversations, a burgeoning romance - this time, between Raphael and Djoura - and occasionally a lot of action, especially around Saara's team in their battles with Lucifer. The trilogy is eventually brought to a tidy finale, with a postscript which suggests that, despite Damiano's early death and lack of descendants, his legacy lives on via his prickly friend Gaspare and Gaspare's sister's grandchild - the same sister for whom Damiano sacrificed himself. That is the best and most touching part of the story, although I found the rest more interesting than volume 2 of the trilogy - partly because of the Black Dragon, who is by far the best character, but also the proud and independent Djoura. Hence a 3-star rating.