Having missed out on the third Underworld movie, Kate Beckinsale is back in vampire mode as warrioress Selene, who escapes imprisonment to find herself in a world where humans have discovered the existence of both Vampire and Lycan clans and are conducting an all-out war to eradicate both immortal species. It’s certainly a bit of a change for the franchise, so take a look at what’s going on in the trailer. It’s due out January 20th, 2012.