Writer John Hlavin (The Shield) is set to write ‘Underworld 4’. No word yet on the film’s plot, though it will likely be in 3-D. Len Wiseman, director of the first two films, will produce. Kate Beckinsale, the star of the first two films, is unlikely to return, as is Rhona Mitra, star of the third film . No director is attached as of now. Unlike the third film, this one will not be a prequel.