新学期就要开始了，邓布利多教授却来到德思礼家找到哈利•波特，哈利六年级的学习似乎就这样出人意料地开始了。更出人意料的事还在接踵而至，哈利从教室的储藏柜里翻到一本魔药课本，它的前任主人是“混血王子”，从此哈利在神秘“王子”的帮助下成为“魔药奇才”。

邓布利多开始了给哈利的单独授课，在课上哈利经历了几段关于少年伏地魔的惊心动魄的记忆，揭开了伏地魔不同寻常的身世之谜。邓不利多带着哈利去寻找伏地魔的魂器，在遥远山脉的洞穴中，邓不利多喝下不知名的毒药。

霍格沃茨上空出现了黑魔标记，邓不利多和哈利急忙赶回学校，在塔楼上，斯内普向邓不利多教授发出了索命咒，邓布利多仰面掉下塔楼，凤凰唱起最悲壮的挽歌。在葬礼结束后，哈利决定完成邓布利多的遗愿，去寻找剩下的魂器。

As the Harry Potter series draws to a close, Harry's greatest adventure yet is just beginning . . . and it arrives in paperback July 25, 2006.

The war against Voldemort is not going well; even the Muggles have been affected. Dumbledore is absent from Hogwarts for long stretches of time, and the Order of the Phoenix has already suffered losses.
And yet . . . As with all wars, life goes on. Sixth-year students learn to Apparate. Teenagers flirt and fight and fall in love. Harry receives some extraordinary help in Potions from the mysterious Half-Blood Prince. And with Dumbledore's guidance, he seeks out the full, complex story of the boy who became Lord Voldemort -- and thus finds what may be his only vulnerability.