Inspired by the original companion volume, it was the first in a series of new adventures featuring wizarding world magizoologist Newt Scamander. Believing that Snape, having killed Dumbledore, is its true master, he has Nagini attack him just as Harry arrives. Harry Potter and the Deathly Hallows was released simultaneously on 21 July 2007, in both the UK and the United States.

Some people can find Stephen Fry dry and nasally, and some people can find Jim Dale a little over the top. In November 2007, Rowling said that she was working on another book, a "half-finished book for children that I think will probably be the next thing I publish. Embark on a writing adventure like no other with a genuine Hogwarts feather quill and accessories – perfect for Owl Post!Rowling completed the book while staying at the Balmoral Hotel in Edinburgh in January 2007, leaving a signed statement on a marble bust of Hermes in her room that reads "J. The escape of Sirius Black--one time friend of Harry's parents, implicated in their murder and follower of "You- Know-Who"--from Azkaban, has serious implications for Harry for it would appear that Black is bent on revenge against Harry for thwarting "You-Know-Who". But is it a coincidence that he can feel eyes watching him in the dark, and should he be taking Professor Trelawney’s ghoulish predictions seriously? He befriends fellow students Ron Weasley and Hermione Granger and is mentored by the school's headmaster, Albus Dumbledore. Her latest children’s novel The Christmas Pig, published in 2021, is a standalone adventure story about a boy’s love for his most treasured thing and how far he will go to find it.

Harry Potter and the Deathly Hallows published by Bloomsbury and HNP as an unabridged audiobook to be published simultaneously with the book for the first time on July 21st 2007". When the Knight Bus crashes through the darkness and screeches to a halt in front of him, it's the start of another far from ordinary year at Hogwarts for Harry Potter. Harry reassures him, recounting Snape's bravery, and revealing the Sorting Hat could account for his wishes. In January, 2000, Prisoner of Azkaban won the inaugural Whitbread Children's Book of the Year award, though it narrowly lost the Book of the Year prize to Seamus Heaney's translation of Beowulf. While she points out "as her critics say, Rowling is no Dickens", she says that Rowling "has willed into a fictional being, in every book, legions of new characters, places, spells, rules and scores of unimagined twists and subplots".

She has said that the last chapter of the book was written "in something like 1990", as part of her earliest work on the series. Lastly, on 1 November 2010, a "Signature" edition of the novel was released in paperback by Bloomsbury.