When Dumbledore arrives at Privet Drive one summer night to collect Harry Potter, his wand hand is blackened and shrivelled, but he does not reveal why. Secrets and suspicion are spreading through the wizarding world, and Hogwarts itself is not safe. Harry is convinced that Malfoy bears the Dark Mark: there is a Death Eater amongst them. Harry will need powerful magic and true friends as he explores Voldemort's darkest secrets, and Dumbledore prepares him to face his destiny … J.K. Rowling's internationally bestselling Harry Potter books continue to captivate new generations of readers. Harry's sixth adventure alongside his friends, Ron and Hermione, invites you to explore even more of the wizarding world; from the comforting cosiness of The Burrow to the brutal squalor of the Gaunt house. This gorgeous paperback edition features a spectacular cover by award-winning artist Jonny Duddle, plus refreshed bonus material, including a quiz to see how much you really know about the Dark Arts. Perfect for anyone who's ready to lose themselves in the biggest children's books of all time.