Chapter 15 of Harry Potter and the Half-Blood Prince, “The Unbreakable Vow,” has a strong emphasis on teen romance, magical ethics, and foreshadowing of the darker plotlines to come. The hosts frame the chapter as a continuation of the romance theme that’s been building, noting how Slughorn’s Christmas party becomes a crucible for messy teenage feelings and questionable decisions. As Andrew puts it, this is the chapter “where Hermione and Filch both have a very specific type, and the stress of teenage crushes is on full display.”

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Listen to the episode above, and check out some of our key takeaways from the chapter and our episode discussion below.

Central to the discussion is Hermione’s decision to invite Cormac McLaggen to Slughorn’s party. Eric notes that Hermione never truly liked Cormac, saying “she clearly does not really want to see him succeed at anything,” but Ron’s awful behavior in the previous chapter pushes her into a spite-fueled choice: “because of how much Ron overreacted… she’s now gone and done it.” Andrew defends her motive to a point, arguing, “She has an ax to grind with Ron, and she’s gonna go through with it.” Micah frames the situation as a classic “you reap what you sow” scenario: not only does Ron suffer, but Hermione has to live with the “consequences of inviting Cormac to the party and not wanting to spend any time with him.”

Laura takes this further by arguing that Hermione’s behavior here marks a regression in her emotional maturity. She calls it “the most un-Hermione-ish thing to do,” explaining that Hermione is “so hyper focused on wanting to get back at Ron that she actually sets herself up for a really unpleasant evening with a person she doesn’t like.” Laura contrasts her “37-year-old answer” with Hermione’s teenage mindset, saying that a mature choice would have been to “go stag and enjoy hanging out with her friends,” but adds, “she’s 16 here, so she’s not going to do that.” The hosts also touch on the films, with Micah recalling the movie moment when Harry and Hermione realize they should have gone together, which he sees as “a pretty good solution.”

The Problems With Love Potions

From there, the conversation shifts to love potions, consent, and Hogwarts security. Andrew highlights how several girls hope to slip Harry a love potion for an invite to Slughorn’s party, and how Hermione insists Filch’s dark detectors won’t notice them because “love potions aren’t dark and dangerous.” Harry, however, pushes back: “I’m not so sure those aren’t dangerous.” As adults, the hosts side firmly with Harry. Eric points out the “evolution on the understanding” of love potions over the past 20 years, especially in light of what Merope does to Tom Riddle Sr. and “all the ways in which it’s possible… to take away somebody’s agency and manufacture consent.” Micah underscores Harry’s unique vantage point, reminding listeners that Harry now knows what Merope did and is acutely aware that he himself is a target of these girls’ schemes.

Laura is particularly critical of Hermione’s blind spot here. She finds it “a little odd” that Hermione doesn’t think about “the many ways that harmless contraband could be used to disguise smuggling other things into the school.” Given that Hermione once modeled the DA’s enchanted Galleons on the Dark Mark and that Draco later uses the Room of Requirement after seeing Dumbledore’s Army, Laura argues Hermione should understand perfectly how benign-seeming magic can be repurposed for darker aims. Eric suggests Hermione may be mentally categorizing Weasleys’ Wizard Wheezes love potions as “garden variety” products that maybe “just make you want to kiss somebody,” but he acknowledges even that is “still problematic.” The panel ultimately agrees that love potions should be banned from Hogwarts, with Micah warning that seemingly “not intended to be sinister” items can still become “a gateway for other things.”

Filch and Pince… In Love?

In a lighter but thematically related thread, the hosts explore the odd suggestion of a romance between Filch and Madam Pince. Andrew recounts the scene in the library where Pince scolds Harry over the notes in his borrowed Potions book and Hermione wonders if Pince overheard him “being rude about Filch,” prompting Harry to say he’s “always thought there might be something between them.” Andrew also brings up their later appearance together at Dumbledore’s funeral, with Pince in a long black veil and Filch in an ancient black suit “reeking of mothballs.” Laura finds the pairing “so random,” noting that it never comes up before or again, and suggests it may simply be there to reinforce the chapter’s “pairing off” and romantic-dramatic tone. Micah and Eric, however, see personality compatibility in their shared strictness and likely support for harsh discipline, with Eric joking that both “take their jobs way seriously” and you can “kind of see, personality wise, how it would align.”

Snape and Draco

The episode’s heaviest analysis centers on Snape and Draco’s tense conversation outside Slughorn’s party. Andrew notes that Draco looks like he’s been losing sleep and that Snape tries to read Draco’s mind to determine whether he was responsible for Katie Bell’s curse, only to be rebuffed. This leads Andrew to question whether Snape is overly reliant on Legilimency rather than “just being a better human and getting to know somebody.” Micah is surprised Draco doesn’t trust Snape more, especially given that “Snape is basically married at the hip to Draco at this point” and Draco’s success or failure will literally determine Snape’s fate. Laura suggests Snape might be strategically “choosing to lose the battle to win the war,” backing off when Draco resists to keep the larger plan on track.

The hosts also examine Draco’s psychology under pressure. Eric argues that Draco both wants and doesn’t want the “glory” of killing Dumbledore: on the one hand, he’s desperate to “be a loyal Death Eater, just like my dad was,” but on the other, he has to go through this ordeal to discover for himself that he “doesn’t got it.” Micah emphasizes that Voldemort’s “impossible task” is really designed to punish Lucius, making the mission deeply personal for the Malfoys and heightening Draco’s reluctance to accept help. Laura notes that admitting he needs Snape’s help would mean acknowledging weakness, something Draco’s upbringing has taught him to fear. As evidence that Draco’s act is slipping, Laura points out that his grades and extracurriculars are deteriorating—he’s skipping homework, dropping Quidditch, and not focusing on Defense Against the Dark Arts—which Snape calls out as part of “the act” he needs to maintain to avoid drawing suspicion.

Finally, the panel plays a “what if” game around the murder plot. Andrew asks what might have happened if Snape or Draco had explicitly said, within Harry’s earshot, that “Dumbledore must be killed.” While Micah initially says Harry would “go straight to Dumbledore,” Laura argues Harry would almost certainly start with Ron and Hermione out of proximity and habit. Eric proposes that even if Dumbledore dismissed Harry’s concerns with a line like “I am aware of your suspicions… for now, I’m most concerned with our lesson,” Harry would then escalate to McGonagall, who is both his Head of House and a member of the Order, and who “doesn’t want to see Dumbledore die” and isn’t in on the death plan. Micah imagines Dumbledore continuing to reassure Harry to “trust Professor Snape,” capturing how Harry’s fears are often treated as overreactions even when he’s right.

Through this lens, the hosts portray Chapter 15 as a pivotal mix of teen drama, ethical gray areas, and carefully laid narrative landmines that only fully detonate when readers reach the lightning-struck tower.