Harry Potter and the Half-Blood Prince

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.

The war against Voldemort is not going well; even Muggle governments are noticing. Ron scans the obituary pages of the Daily Prophet, looking for familiar names. Dumbledore is absent from Hogwarts for long stretches of time, and the Order of the Phoenix has already suffered losses.