The transcript for the trailer
Dumbledore: This place has known magic - very dark, very powerful. This time, I can not hope to destroy it alone.
Arthur: Times like these, dark times, it can bring people together.
Ginny: Take my hand.
Arthur: And they can't tear them apart.
Ron: These girls, they're going to kill me, Harry.
Voiceover: This year...
Remus: Voldemort has chosen Draco Malfoy for a mission.
Voiceover: Evil will pass through from their world into our own.
Slughorn: These are mad times we live in, mad!
VO: And the darkest hour...
Dumbledore: This is beyond anything I imagined.
VO: ... is upon us all.
Dumbledore: In my life, I have seen things that are truly horrific. Now I know you'll see worse. You're the chosen one, Harry.
Hermione: You have to realise who you are.
Dumbledore: Without you, we leave the fate of our world to chance. You have no choice.
Arthur: Harry, no!
Dumbledore: You must not fail.
Snape: It's over.
VO: From Warner Bros. pictures...
Draco: I have to do this.
Harry: Fight back, you coward! Fight back!