[Harry] wakes up early thinking of [Dumbledore] and [Godric's Hollow], and finally decides to climb upstairs and have a look around.
[Harry] wanders through [number twelve, Grimmauld Place], realizing that someone has searched through it. Then, in [Sirius]'s room, he finds relics of his parents - a picture of [James], and part of a letter from [Lily] describing Harry's first birthday - and searches the room for the rest of the letter, wondering what it might say about [Dumbledore].
[Hermione] finds [Harry] in [Sirius]'s bedroom, wondering where he's been. He shows her the letter from his mother and they wonder about [Bathilda Bagshot] and about the rumors they've heard about [Dumbledore], finally deciding to head down to breakfast.
While walking downstairs, [Harry] notices the sign on [Regulus Black]'s bedroom - and suddenly realizes that he must be the mysterious [R.A.B.] When he, [Hermione], and [Ron] search the bedroom, though, they turn up nothing - until Harry realizes that he has seen the locket before, while cleaning the drawing room, and they race downstairs to see whether [Kreacher] stole it.
[Harry] bolts to [Kreacher]'s cupboard with [Ron] and [Hermione] in tow, only to discover that the [locket] isn't there.
Desperately wanting to find the [locket], [Harry] summmons [Kreacher] and asks him about it, barely ready for the story that follows. He learns that [Voldemort] forced Kreacher to drink the potion in the [cave] and left him for dead, infuriating [Regulus]; that Regulus returned with Kreacher, drinking the potion himself before being dragged into the lake of [Inferi]; and the [Mundungus Fletcher] has since stolen the true locket. As a token of gratitude, he gives Kreacher [Regulus's locket] and sends him off to find Mundungus.
As they wait for [Kreacher] to return, [Harry], [Ron], and [Hermione] notice [Death Eaters] congregating in [Grimmauld Square]. Meanwhile, Hermione continuously reads [The Tales of Beedle the Bard], while Ron plays with the [Deluminator] and Harry walks out in frustration.
Walking downstairs alone, [Harry] suddenly hears the door open - and [Lupin] walks in. After Harry confirms his identity, he, [Ron], and [Hermione] tell Lupin all that's happened to them, and he updates them as well. He also shows Harry a [Daily Prophet] story labeling Harry as Wanted, and another describing the rounding up of [Muggle]-borns. Lupin then asks to accompany the trio, but Harry gets angry with him for deserting the now-pregnant [Tonks], and Lupin storms out.
With [Lupin] gone, [Harry] defends his anger to [Ron] and [Hermione], though he wonders himself whether driving Lupin out of the house was the right thing to do.
Angry and frustrated, [Harry] plops down in front of the [Daily Prophet. only to find a story about [Dumbledore], taken from [Rita Skeeter]'s new book, suggesting that [Ariana] had been a [Squib], and Harry wonders how much of it might be true.