The story's been revealed already. Nothing else to say, but that this is not, by a far cry, Rupert's first great dramatic achievement.
Last comment's remarks on his work are a bit "off-colour". It'd be good for all of us viewers to get rid of Rupert's role in the Harry Potter's still unfinished franchise, OK. Watch him alongside Julie Walters in "Driving Lessons" and you'll see what this almost 20-year old "kid" can do... he's been a great actor for a long time! (Driving Lessons was shot while The Goblet of Fire was still rolling cameras!).
So, if there's anything to say about an actor here, it would be really appropriate to watch his whole work before judging it, especially when he's so young. Driving Lessons was the door that opened him a whole new world because he did it so well. And here, again, he delivers with enormous power, literally obliterating Bob Sheehan and Kim Nixon, especially Robert, who's been in the limelight before Rupert.
Oh, and BTW, is there any other actor coming from the HP films who's talented as Rupert? Just watch and let some three more years go on, and you'll see Rupert in more and more big films that really suit his capabilities.
