Harry Potter and the Half-Blood Prince

Emboldened by the return of Lord Voldemort, the Death Eaters are wreaking havoc in both the Muggle and wizarding worlds and Hogwarts is no longer the safe haven it once was. Dumbledore is intent upon preparing Harry for the final battle that he knows is fast approaching. He needs Harry to help him uncover a vital key to unlocking Voldemort's defenses--critical information known only to Hogwarts' former Potions Professor, Horace Slughorn. Meanwhile, teenage hormones rage across the ramparts ...