The Bartimaeus Trilogy, Book One

Nathaniel, an eleven-year-old magician-in-training, thinks he's ready to take on more challenging spells. With revenge against the proud and ambitious Simon Lovelace on his mind, he masters one of the toughest spells of all and summons Bartimaeus, a 5000-year-old djinni, to assist him. But summoning Bartimaeus and controlling him are two different things entirely, and when Nathaniel sends the djinni to steal Lovelace's greatest treasure, the Amulet of Samarkand, he finds himself caught in a whirlwind of magical espionage, murder, and rebellion.
Jonathan Stroud, along with acclaimed comic books-writer Andrew Donkin and artists Lee Sullivan and Nicolas Chapuis, turns the beloved and internationally best-selling first book in the Bartimaeus trilogy into a spellbinding graphic novel sure to excite and delight fans across all magical planes.