For Thomas Berrington, torn between two warring civilisations, Ronda is an escape from the madness engulfing Gharnatah. For al-Zagal, the default leader of al-Andalus, it is a return to his mountain stronghold. During the year 1485 this should be a time of recovery and replenishment. Then the Spanish army arrives, spreading across the plain below towering cliffs. And someone is murdering women so subtly the first the deaths go unnoticed. Thomas and Jorge are once more thrown into the pursuit of a killer as the world around them changes, and the end of a once great civilisation draws closer. Set in the final years of the Moorish Empire that once ruled the whole of Spain, The Incubus is the fourth book in the acclaimed Thomas Berrington mysteries.