Here are some key elements of the falling action:
* Hagrid's innocence is proven: Sirius Black's confession reveals that Hagrid was framed for the crime of opening the Chamber of Secrets and that his innocence was never questioned.
* The true identity of the traitor is unveiled: Sirius Black's story exposes Peter Pettigrew as the real culprit behind the events of the previous two books.
* The Dementors are removed from Hogwarts: The Ministry realizes that the Dementors were not a suitable defense against Sirius Black and their presence was a threat to the students.
* The "dementor kiss" threat is lifted: Hermione's Time-Turner was used to undo the events of the day, effectively eliminating the threat of Sirius Black's capture.
* Sirius Black's escape: Though briefly captured, Sirius manages to escape Hogwarts with the help of Buckbeak, the hippogriff.
* The ending establishes a new sense of hope and peace: Harry and his friends have successfully overcome a major threat, and Sirius Black's capture provides a temporary sense of security.
* The revelation of the Prophecy: The ending also establishes the importance of the Prophecy and its connection to Voldemort and Harry. This sets the stage for the future conflicts in the series.
It is important to note that the events of the falling action are not merely a resolution of the main conflict, but also a setup for the events of the next book. The revelation of Peter Pettigrew's survival and the prophecy's existence create a sense of foreboding and foreshadow future challenges for Harry.