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.