** Children of the Lamp series, book 1
Meet John and Philippa Gaunt, twelve-year-old twins who one day discover themselves to be descended from a long line of djinn. All of a sudden, they have the power to grant wishes, travel to extraordinary places (and not necessarily on public transportation), and make people and objects disappear. Luckily (and luck does have something to do with it), the twins are introduced to their eccentric djinn-Uncle Nimrod, who will teach them how to harness their newly found power. And not a moment too soon!