In Harry Potter and the Philosopher's Stone, Hermione is in the toilets when Harry and Ron lock in the troll. She lies and says that she went looking for the troll. Why? She could have just said that she was in there because she needed the toilet (she was allowed to be, it's a girls' bathroom) and Harry and Ron came to save her.

Is there a reason she lied?

  • 12
    Logic is fuzzy when you're 11. I'd always thought it was clear she did it just to keep the focus off Harry and Ron and keep them out of trouble.
    – Radhil
    Commented Apr 6, 2017 at 16:13
  • 21
    The answer to "why does she lie" should be obvious. Your question is really "why did she pick that particular lie".
    – tobiasvl
    Commented Apr 6, 2017 at 16:19

7 Answers 7


There's a few things going on here

Hermione wanted to protect her saviours

Recognising that the boys are about to get punished for their actions (disobeying a teacher) while she's going to get away scot free, Hermione's lie gets her into trouble but largely gets them both out.

‘If they hadn’t found me, I’d be dead now. Harry stuck his wand up its nose and Ron knocked it out with its own club. They didn’t have time to come and fetch anyone. It was about to finish me off when they arrived.’
Harry and Ron tried to look as though this story wasn’t new to them.
‘Well – in that case …’ said Professor McGonagall, staring at the three of them. ‘Miss Granger, you foolish girl, how could you think of tackling a mountain troll on your own?’

Her actions demonstrate her forgiveness of Ron

It would have been the easiest thing in the world to have thrown them under the bus "I was in the loo crying because Ron said horrible things to me" but after they saved her life, she felt that she wanted to throw her lot in with theirs and damn the consequences. It worked and they all became friends.

But from that moment on, Hermione Granger became their friend. There are some things you can’t share without ending up liking each other, and knocking out a twelve-foot mountain troll is one of them.

Her actions were logical

As a result of her lie, Gryffindor lost five points but gained ten. Had she said nothing, it's probably that they would have lost at least ten points and possibly many more. Because of her previous good reputation, any punishment she gets is likely to be far less severe.

  • 51
    Getting those five house points is very important. (Especially before the major point inflation in the later books.)
    – ibid
    Commented Apr 6, 2017 at 17:41
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    I'm still confused here. How does her supposedly having gone to take on the troll herself protect Harry and Ron? "I went to take on the troll and couldn't, but Harry and Ron came to save me" isn't any better for them than "I was using the bathroom, and Harry and Ron came to save me"
    – Ben Sutton
    Commented Apr 7, 2017 at 16:13
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    @BenSutton - Because she's made them the heroes (didn't disobey a teacher, just didn't have time to tell them, then saved her) and herself the villain. Since she's seen as a prize student, her punishment (and the collective punishment for the house) will be much lower. Win win for all concerned.
    – Valorum
    Commented Apr 7, 2017 at 16:15
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    @BenSutton - The implication is that she went hunting, they noticed her absence and came looking for her.
    – Valorum
    Commented Apr 7, 2017 at 17:10
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    @BenSutton - It's not really any better, but she takes the blame on herself as a distraction. What she claims to have done is really dumb and draws attention from their transgression (and simultaneously highlights their bravery and selflessness).
    – Valorum
    Commented Apr 7, 2017 at 17:43

Hermione panicked and couldn't think of a better lie.

Saying that she went looking for the troll probably wasn't the best thing she could have said. It worked well enough, since she was able to get both Harry and Ron out of trouble and come out of it with five extra House points. If she was thinking more clearly, she might have been able to say something that would keep all three of them out of trouble, and not get any House points deducted.

Remember, though, she probably wasn't able to think particularly clearly. She was having a very stressful day. She was crying in a bathroom all day because Ron insulted her, then she was cornered by a troll. She narrowly escaped being either hurt or killed and ended up getting saved by the same student who was the reason why she was there in the first place and his best friend. At this point, she wouldn't have been thinking as logically as she normally does, because she was probably in somewhat of a state of shock.

But after Ron and Harry saved her, she didn't want to immediately get the two of them in trouble, so she said the first thing she could think of to make sure McGonagall wouldn't punish them. What she said was effective in doing that, and she didn't get in that much trouble for saying she went looking for the troll.

As for whether the lie she told was the best way to handle the situation, probably not.

There's no reason why an excuse involving her just being in the bathroom at the wrong time wouldn't have worked. Keep in mind, we don't know where all the bathrooms are in Hogwarts. They probably aren't very close together, since Dumbledore mentioned really needing one when he found a room of chamber pots (actually the Room of Requirement). Hogwarts is a big place, so sometimes it would take a while to get where you're going. The students were all supposed to be in their common rooms, but if it would have been a while before she got there, this definitely could happen. It would have probably been better for her to say she really needed to go, so she ran off to the nearest bathroom.

Presumably, there would be available bathrooms somewhere near where they would be keeping the students (though it's never said, I'd expect each House common room would have one), since they might have been there for a long time, but depending on how far away the end point was, someone easily might not be able to make it all the way if they had to go before the evacuation. This is a plausible situation that McGonagall could believe, since sometimes you just can't wait to get to a bathroom.

She also could have said she was in the bathroom during the student evacuation, in this case also blaming some kind of illness like stomach flu/diarrhea/anything else that would make someone spend a lot of time in the bathroom, and didn't realize that there was a troll in Hogwarts and that students were supposed to be in their common room. This is fairly close to the truth, avoids mentioning her crying or Ron insulting her, and keeps all three of them out of trouble.


Remember why she actually went to the restrooms: she ran away to hide because she was embarrassed and hurt.

The students had been evacuated and were supposed to be with their houses. Nobody would have believed that she just popped off on her own to toilet. She wasn't where she was supposed to be. She lied because of why:

a) she was embarrassed by other kids

b) ran away because she was embarrassed

c) ended up endangering herself and others because of her running away

To admit to all of that would be a perfect storm of embarrassment, the exact thing she was trying to avoid and hide from in the first place

  • 1
    But she could have just said she needed to use the bathroom?
    – Kababage
    Commented Apr 6, 2017 at 16:15
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    The students had been evacuated and were supposed to be with their houses. Nobody would have believed that she just popped off on her own to toilet. She wasn't where she was supposed to be. She lied because of why
    – NKCampbell
    Commented Apr 6, 2017 at 16:17
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    It also occurs to me that Hermione comes perilously close to being Moaning Myrtle Version 2.0. A student hiding in the bathroom because of peer abuse and is (nearly) killed by a monster. Interesting parallel
    – NKCampbell
    Commented Apr 6, 2017 at 16:20
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    Or perhaps Myrtle v 0.5 as it's possible JKR hadn't come up with Myrtle yet.
    – Seeds
    Commented Apr 6, 2017 at 19:25
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    do we know for certain that she hadn't come up w/ Myrtle @Seeds? Of course, you probably mean the second book had not been written but that does not mean the character or background didn't exist in her head yet :)
    – NKCampbell
    Commented Apr 6, 2017 at 19:56

Hermione was in the toilets (and had been all day) because of her previous encounter with Ron, who said many hurtful things.

Her actions were an attempt to prevent Ron from being scolded by the professors and a way of demonstrating to him that he was forgiven.

  • 4
    But this doesn't explain why she didn't just say that she needed to use the bathroom, then she wouldn't have been in trouble and neither would they?
    – Kababage
    Commented Apr 6, 2017 at 16:13
  • But 'needing to use the bathroom' wouldn't have explained her complete absence from the Feast. 'Searching for the troll' doesn't either, but it did give the teachers something else to focus on.
    – Jeff
    Commented Apr 6, 2017 at 18:33

Harry and Ron almost got Hermione killed. That’s why she lied for them. Not only did they have ample time to tell a teacher that Hermione didn’t know about the troll, they LOCKED HER IN with it. Had the door been open she could’ve run out, or the troll may have turned around without noticing her. It wasn’t until they heard her screaming that they realized their mistake and ran back to save her. Essentially Harry and Ron did what Hermione claimed to do, they took on the troll instead of calling for help. Hermione knew she could get away with less severe punishment.

  • 1
    I'm not sure why someone has downvoted you, I think you have the makings of a good answer here. Although to improve it is there any textual evidence that supports you reasoning that she lied so they would be in less trouble?
    – Edlothiad
    Commented Jul 12, 2020 at 19:01

Unfortunately many other answers I feel don't make sense. She didn't change what the boys would be perceived as compared to the truth. In both cases they tried to save Hermione.

I only see two logical explanations to this

1.The bathroom she was in wasn't the closest one to the great hall, so she would have had to explain why she was in that particular bathroom. Apparently she has been there "all afternoon", so perhaps that's why she needed to make sure not to reveal that she has been crying because of Ron and instead say she went looking for the troll. But this would raise the question of why she assumes the teachers would know for how long she was already in the bathroom.

2.Hermione assumed that Ron and Harry wanted to fight the troll. She didn't know they came to save her so she decided to take the blame instead.

Or perhaps the third possibility already mentioned: She is a first grader who got bullied, cried for hours about it, almost got killed and now was in one of the probably most uncomfortable situations: Confronted by teachers about her misbehaviour. So that's why she couldn't think of a better lie.

  • In the USA where I am from a "first grader" is in the first grade or year of primary school and is thus usually 6 to 7 years old. In the UK children who go to boarding schools seem to start at about age 11, meaning they have had about 4 years of schooling in other schools first and are much older than first graders in the USA. Commented May 4, 2021 at 16:55

What’s always troubled me about this, is that Hermione shouldn’t have had the information needed to concoct this lie. If she’d been in the bathroom during the feast, she didn’t hear Quirrell come in and announce the troll, or the orders to the students & staff.

All she knows is she’s in a bathroom and a troll comes in. Harry and Ron come in and save her. Then Teachers appear and say “explain yourselves.” That’s not enough information to come up with “I went looking for the troll.”

Harry and Ron know that they disobeyed orders after the warning, but I would think the normal reaction for Hermione would be “what the heck do you mean, ‘explain yourselves’? I was just attacked by a troll! Why the heck is there a troll?”

  • 1
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    Commented Aug 17, 2022 at 21:31

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