John Hlavin, whose credits include "The Shield" and "Trust Me," is on board to write "Underworld 4," the latest installment in the popular series that began with Len Wiseman's "Underworld" in 2003.

Hlavin told Heat Vision that plot details will remain secret for a while. However, he said "Underworld 4" won't be a prequel. "It will satisfy old fans and excite new audiences...," he said.

Kate Becksinale said last year she probably won't return for another film. Her appearance in a fourth film has been rumored for a while though, but no official deals are in place at this stage.

The last installment in the series, “Underworld: Rise of the Lycans,” opened last January and scored $45 million domestically. I also enjoyed that one better than the second film, so I'm fine with another entry.