"I've said all along that wizards would pay for how they treat house-elves." -- Hermione Granger
Harry explores more of Grimmauld Place, finding a letter from his mother in Sirius’ room, then discovering that Sirius’ brother Regulus was the mysterious R.A.B. Hermione remembers seeing the locket two summers before. Harry calls Kreacher, and Kreacher reveals that while he took the locket, it was then taken from him by Mundungus Fletcher. He explains how it came into Regulus’ possession. Harry then asks Kreacher to find Mundungus and bring him to Grimmauld Place, and wins Kreacher’s loyalty by giving him the false locket for his own.
Calendar and Dates
The day after the previous chapter, so it is 2 August.
Interesting facts and notes
Kreacher nicked loads of things back from us
Yes; see the Christmas scenes from OP.
Voldemort needed an elf?
I wouldn't have given Voldemort credit for thinking outside the box like this. And as it turns out, he didn't - he just wanted a disposable test subject.
"Of course, Voldemort would have considered the ways of house-elves far beneath his notice, just like all the purebloods who treat them like animals...It would never have occurred to him that they might have magic he didn't."
That sounds like Moldyshorts, all right.
And he drank - all the potion -
I respect Regulus for that. He could have made Kreacher drink it instead of doing it himself, but he didn't.
Exceptional character moments
Hermione's analysis of Kreacher.
Regulus's change of allegiance because of the way Voldemort treated Kreacher.
Kreacher's devotion to Regulus.
"What's up? If it's a massive spider, I want breakfast before I -"
It was a pompous little sign, the sort of thing that Percy Weasley might have stuck on his bedroom door
"'Ron! I've found him!' Ron's annoyed voice echoed distantly from several floors below. 'Good! Tell him from me he's a git!'"