Yinn. Fuego Azul

It is the year 1120. Akil the Djinn returns to the world of men to serve a Leonese nobleman called Diego Tovar. Diego has lost his lands and is prepared to do anything to get them back. But the only way of achieving his goal is to steal a valuable manuscript from the messenger carrying it… who turns out to be a girl called Sahar.
'Blue Fire' is the first book in the 'Yinn' series, which combines historical fiction with fantasy. We are in the Iberian peninsula in the early 12th century: a convulsive period in Christian realms due to confrontations between noblemen, as well as in Al-Andalus where, faced with cultural splendour, the Almoravids are trying to impose a new order. 'Yinn' also introduces us to a fantastic universe in which the magical traditions of the three co-existing cultures of Iberia in the Middle Ages are blended.