The Unknowable Room is the twenty-first chapter of Harry Potter and the Half-Blood Prince.


Harry racked his brains over the next week as to how he was to persuade Slughorn to hand over the true memory, but nothing in the nature of a brainwave occurred and he was reduced to doing what he did increasingly these days when at a loss: poring over his Potions book, hoping that the Prince would have scribbled something useful in a margin, as he had done so many times before.

‘You won’t find anything in there,’ said Hermione firmly, late on Sunday evening.

‘Don’t start, Hermione,’ said Harry. ‘If it hadn’t been for the Prince, Ron wouldn’t be sitting here now.’

‘He would if you’d just listened to Snape in our first year,’ said Hermione dismissively.


There are no moments from this chapter.

See also

Harry Potter and the Half-Blood Prince
Elf Tails Lord Voldemort's Request The Unknowable Room After the Burial Horcruxes
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