It's the vampiric Death Dealers vs. the Lycans in this slick 2003 movie
This mostly mediocre movie is a painless enough time-waster, ... lives up to the 
potential of its premise about a centuries-old war between rival ... Kate 
Beckinsale stars as Selene, a Death-Dealer (i.e., a vampire trained to 
assassinate rival werewolves) who realizes that the lycans are hatching a new 
plot,... [DOC] [TLE] I Think, Therefore I Review.