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Complete, detailed, and amazing Reader's Guides
Harry Potter and the Half-Blood Prince

Chapter Fifteen:
The Unbreakable Vow

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Notes by Steve Vander Ark and Michele L. Worley
Synopsis and links by John Kearns

U.S. hardcover edition: pages 303 - 324
U.K. hardcover edition: pages 284 - 304
Timeframe: Thursday-Friday, 19-20 December, 1996 [Y16]

In which Hermione stays angry with Ron but Harry tries to stay friends with both, Harry finds that girls are trying to seduce him, and Romilda Vane tries to slip him a Love Potion. Harry then asks Luna to Slughorn's Christmas party, and Hermione invites McLaggen to upset Ron. After some general mingling at the party, Malfoy is caught prowling the corridors and Snape takes him away to an empty classroom, where Harry overhears Snape's offers to help Malfoy and Draco's refusals.

The Unbreakable Vow

No comments on chapter title yet.

Interesting facts and notes about the text of this chapter:

I thought Filch had banned anything bought at Weasleys' Wizard Wheezes?

As part of their Owl Order Service, Fred and George send love potions disguised as perfumes and cough potions, and make sure to put this information on the back of the bottles.

Slughorn's Christmas Party by Marta T.

Characters introduced in this chapter:

Characters returning in this chapter:

Characters mentioned in this chapter:

Settings and locations introduced or returning in this chapter:

Settings and locations mentioned in this chapter:

Exceptional character moments:

  • Still to come....

Spells and Potions:

Links and Resources:

Memorable lines:

  • Harry had to put up with the frequent presence of Lavender Brown, who seemed to regard any moment that she was not kissing Ron as a moment wasted.

  • It seemed extraordinary that Hermione's mania for upholding rules could have abandoned her at this crucial juncture.

  • "What have you been doing to that book, you depraved boy?"

  • There was a noise like a plunger being withdrawn from a blocked sink and Ron surfaced.

  • "Wow, you like your Quidditch players, don't you? First Krum, then McLaggen..."
    "I like really good Quidditch players," Hermione corrected her, still smiling.

  • Harry was left to ponder in silence the depths to which girls would sink to get revenge.

  • "The Aurors are part of the Rotfang Conspiracy, I thought everyone knew that.  They're working to bring down the Ministry of Magic from within using a combination of Dark Magic and gum disease."

Strictly British:


An unspecified amount of time passes at the start of the chapter, but finally we are put back on track: it takes place the final two days of classes prior to Christmas break.  According to the calendar as we have thus far (based on the date and day of Ron's birthday in HBP18), these two days should fall on Thursday and Friday, 19-20 December.


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