It always amazed me to think that Sirius Black somehow (allegedly) became the first person (at the time of the third book) to escape from Azkaban.
Now, I can't really remember exactly what happens in the books (read it years ago) but I have a vague feeling that it was not particularly explained.

  • Did he get help?
  • Did he pull a Shawshank Redemption?
  • Am I just forgetting a major plot point, like OOTP breaking him out somehow without the ministry knowing about it?

Is there any canon explanation of exactly how Sirius managed to escape from Azkaban Prison? Which is a high security, magical, dementor infested prison; not to mention a prison filled with Death Eaters who probably despise him and would definitely try to stop his escape.

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    I'm pretty sure Sirius explains it himself. Change into his dog form, charge the door at feeding time, swim to shore... Make for Privet Drive. Jun 19, 2014 at 15:38
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    Being that this world is magical filled with many Animagus, you'd think the only (magic) prison in the country would have that covered. Jun 19, 2014 at 15:39
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    @Noodlemanny Not that many (I think Hermione said there had only been a few that century, but could be misremembering), and they're supposed to be registered. It's possible that there are provisions taken for prisoners who are known Animagi, but nobody knew that Sirius was one. Jun 19, 2014 at 15:40
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    Having now done a quick Google search (sorry should have done this before, no excuse) I found this harrypotter.wikia.com/wiki/Azkaban_escapes Basically it seems that he changed to his dog form then slipped through the bars when he was thin enough. Because he was an unregistered Animagus there were no precautions against this. It does say that he only escapes after he saw reference to Peter Petigrue as a rat. Seems odd to only try when given a particular reason. Why didn't he try to escape before? Jun 19, 2014 at 15:47
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    Once again I must recommend the fanfic "Harry Potter and the Methods of Rationality". The description of Azkaban is terrifying; in particular, if a new prisoner is an Animagus (registered or not, they test), they remove the Animagus form before turning the key. They've also anticipated the use of time-turners, phoenixes, and damn near everything else. The escape (or breakout), is quite intricate and logical.
    – Beta
    Jun 20, 2014 at 0:58

2 Answers 2


Sirius explains in the third or fourth book that the thought of his innocence and revenge kept him from being affected by the Dementors. He later says that he got a Daily Prophet and saw Peterpettigrew after that he knew he had to escape so he did. Quoted from the Harry Potter answer wikia:

His knowledge of his innocence allowed him to retain his powers and sanity. 'One night, when (the Dementors) opened my door to bring food, I slipped past them as a dog. It's so much harder for them to sense animal emotions that they were confused ... I was thin enough to slip through the bars. I swam as a dog back to the mainland. I journeyed north and slipped into the Hogwarts grounds as a dog. I've been living in the Forest ever since.' Prisoner of Azkaban; chapter 'The Servant of Lord Voldemort'http://harrypotter.answers.wikia.com/wiki/How_did_Sirius_Black_escape_from_Azkaban

This Quote is from the Harry Potter wikia, but its sort of conjectural(at least the article said that), it matches the other answers though

In 1993, Sirius Black escaped from Azkaban after seeing Scabbers in a Daily Prophet article, of the paper Cornelius Fudge gave him, in July 1993, recognising him as his traitorous former friend Peter Pettigrew. By 1 August, Black took advantage of his extreme weight loss to slip through his cell door in his Animagus dog form (which was unregistered, thus the Ministry did not take preparations against) while the Dementors were bringing in his food and swam across the North Sea to find Pettigrew.[2]Black was able to maintain his sanity due to his knowledge of his innocence, a non-happy thought that the Dementors could not take. It was only this that allowed him to maintain his powers to transform, and what made the escape possible.

This escape was the only known unaided escape, and officially the first one in Azkaban history (until Barty Crouch Jr.'s escape was revealed). Black was facing the Dementor's Kiss as punishment should he ever be recaptured, though he ultimately eluded the Ministry, and his name was cleared shortly after his death at the hands of Bellatrix Lestrange in the Department of Mysteries.http://harrypotter.wikia.com/wiki/Azkaban_escapes

And this link is to a question from the movies stack exchange- https://movies.stackexchange.com/questions/11314/how-did-the-death-eaters-physically-escape-from-azkaban

It explains the mechanics to escape.


Sirius explains the mechanics of his escape himself in Prisoner of Azkaban (emphasis mine):

“It was as if someone had lit a fire in my head, and the dementors couldn’t destroy it. … It wasn’t a happy feeling … it was an obsession … but it gave me strength, it cleared my mind. So, one night when they opened my door to bring food, I slipped past them as a dog. … It’s so much harder for them to sense animal emotions that they were confused. … I was thin, very thin … thin enough to slip through the bars. … I swam as a dog back to the mainland. … I journeyed north and slipped into the Hogwarts grounds as a dog. I’ve been living in the forest ever since, except when I came to watch the Quidditch, of course. You fly as well as your father did, Harry. …”

  • The text before the bold text also reveals why he didn't try before, which was something I questioned in the comments. Thanks Jun 19, 2014 at 15:52
  • Does seem a little odd that no one noticed a dog snooping around, but I guess that's just nitpicking :) Jun 19, 2014 at 15:55
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    @Noodlemanny There was no one around to "notice a dog snooping around". Jun 19, 2014 at 17:47
  • @Noodlemanny, A better reason why he didn't escape sooner is because he knew he'd be caught again eventually. The "text before the bold text", I think, more explains why he didn't die or lose his mind earlier.
    – trysis
    Jun 20, 2014 at 6:28

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