Alif the Unseen by G. Willow Wilson
'I will tell you a story, but it comes with a warning; when you hear it, you will become someone else.'
He calls himself Alif, a young man born in a Middle Eastern city that straddles the ancient and modern. When Alif comes into possession of a mysterious book entitled The Thousand and One Days, he discovers a door to another world - a world from a very different time, when old magic was in the ascendant and the djinn walked amongst us.
Thus begins an adventure that takes him through the crumbling streets of a once-beautiful city, to uncover the long-forgotten mysteries of the Unseen. Alif is about to become a fugitive. And he is about to unleash a destructive power that will change everything and everyone - starting with Alif himself...