In what you probably could call the action-thriller equivalent to the Twilight franchise, Kate Beckinsale returns as Selene, the slinky vampire warrioress who likes to do her hunting in a PVC catsuit. Having skipped lead-role duties in the previous instalment of the franchise (that would be Underworld: Evolution), KB escapes from prison at the beginning of this film, only to witness the two tribes of immortal species (vampires and lycans) in the crosshairs of a human army who want to destroy them forever. We can deduce that there will be ample firepower and lots of sharp objects, and Beckinsale will run, slide, leap and spin around various murky locations, kicking posterior like her life depended on it.