By Darren Franich
Updated December 07, 2010 at 10:58 PM EST

After a teaser that was heavy on narration, quick cuts, and loud noises, the new trailer for DreamWorks’ upcoming teen sci-fi movie I Am Number Four slows down long enough to establish the movie’s mood a little bit. Alex Pettyfer is the handsome troubled boy with a secret (he’s an alien on the run from hunters), Glee‘s Dianna Agron is the pretty troubled girl who falls for him… so far, so Twilight. But then, when you least expect it, things start going Boom! Timothy Olyphant is on hand as the Giles to Pettyfer’s Buffy, playing the renegade teen’s mentor/protector. See for yourself:

PopWatchers, are you intrigued by I Am Number Four? Did you read the original book? More importantly, did you read my colleague Keith Staskiewicz’s interview with Four‘s extraterrestrial author, Pittacus Lore? (Fact: Aliens use e-readers. How advanced!)

Read more:

‘I Am Number Four’ trailer: Glowing hands and flipping cars

An out-there interview with Pittacus Lore, the alien author of ‘I Am Number Four’

EW Exclusive: Book trailer for ‘I Am Number Four’

EW Exclusive: Read the first nine pages of ‘I Am Number Four’