Questions & Theories: Half-Blood Prince

* Where are Ollivander and Fortescue? (My mother suggested Fortescue was taken because Voldemort likes ice cream as much as we do.)

* Is there any significance to Slughorn saying there is immense power in obsessive love? And will Slughorn resume his post at Hogwarts, possibly giving Harry further direction on horcruxes and how to destroy them?

* What happened to Dumbledore's hand? Will the memory of this excursion be left in the pensieve for Harry?

* Did Mundungus pilfer anything important from Grimauld Place? I'm going to guess no here, since JKR specifically told film producers they'd better leave Kreacher in OOTP but put up no fight about Mundungus being struck from the film.

* Hogwarts is so important to Riddle. Beyond collecting the items from the founders, was he able to hide a horcrux there?

* Any significance to Octavius Pepper, who goes missing?

* What happened to Dumbledore when he drank the potion? When asked shortly following the publication of HBP what Dumbledore's boggart would be, she said, "Read the book. There's your answer." Is this potion liquid boggart, or, in essence, liquid fear? And still, what did he mean when he said, "Don't hurt them, hurt me"? (Some wonder if the liquid was the Draught of Living Death, but early in the book, Harry's concoction of DOLD is a pale pink - not green - just before Slughorn gives him top marks.)

* Why did Snape and Dumbledore argue over something Snape didn't want to do anymore? (I mean, I guess I'd probably get tired, too, if I were a double-triple-to-the-nth-power agent.)

* Trelawney is shown at two different times with tarot cards. Once she mentions conflict, an ill omen, and a dark young man who doesn't like her - just as she passes Harry. And when she tells him that it was Snape who overheard the prophecy, she's talking about the lightning struck tower. Is Trelawney a truer seer than we think?

* What will happen to Dumbledore's wand?

* Who is R.A.B.? JKR says Regulus Black would be "a fine guess."

* What are the horcruxes? Is, as Andi suggested in the comments on the OOTP post, Dumbledore confirming that Nagini is a horcrux after she attacks Mr. Weasley? In addition to Hufflepuff's cup and Slytherin's locket, are there artifacts from Ravenclaw and Gryffindor? Mugglenet suggests it was Ravenclaw's wand Tom Riddle wanted to recover - is this his connection to Ollivander? And while Dumbledore says that sword of Gryffindor is safe, is the sword of Gryffindor something else...like Harry himself? This may be the epic battle between the Heir of Slytherin and the Heir of Gryffindor, and if Harry is a horcrux (as some think he might be) then we'll get our metaphorical sword.

* Where are the horcruxes? Most people think that the locket is the heavy locket no one could open at Grimauld Place in OOTP and was brought there by Regulus Black, one R.A.B. The other horcruxes are anyone's guess. I've seen theories that one is hidden in the Room of Requirement (where Harry left his Half-Blood Prince textbook). Others have suggested Gringotts. This is one question I think, aside from the locket, we have the least clues to answer.