Chapter 6 - "Draco's Detour" - In which we learn of several disappearances including Florean Fortescue and Mr. Ollivander, and Harry, Hermione, and the Weasleys go shopping at Diagon Alley, escorted by Hagrid. There they discover a much-changed atmosphere and an empty Leaky Cauldron, have a run-in with Draco and Narcissa Malfoy in Madam Malkin's, tour Weasleys' Wizard Wheezes, and sneak out to follow Draco into Borgin and Burke's, where they overhear a mysterious conversation between him and Mr. Borgin.
In Fred and George's Room
With [Ginny] gone, [Harry] tells [Ron] and [Hermione] about the [prophecy] - and [Hermione] gets punched in the face by a [telescope].
[Hermione] freaks out about her [O.W.L.] results after [Harry] tells her they're due to arrive today.
[O.W.L.] results arrive, and [Harry], [Ron], and [Hermione] compare scores. [Harry] then realizes that this is the end of his ambition to become an [Auror].
Tidings of Mysterious Disappearances and Deaths
[Harry] spends several weeks at the [Burrow], playing [Quidditch] and hearing about frequent disappearances and deaths.
On [Harry]'s sixteenth birthday, [Lupin], [Bill], and [Arthur] bring news of disappearances and deaths - [Karkaroff], [Ollivander], and [Florean Fortescue].
Booklists arrive - [Harry] is made [Quidditch] captain, and [Molly] plans a trip to [Diagon Alley].
[Bill] gives [Harry] some money out of his [Gringotts] vault.
A Very Different Diagon Alley
[Harry], [Hermione], and the [Weasleys] take [Ministry cars] to the [Leaky Cauldron], where they meet up with [Hagrid]].
[Harry], [Hermione], and the [Weasleys] walk through a much-changed [Diagon Alley].