By Margaret Lyons
Updated August 24, 2009 at 12:16 PM EDT

True Blood star Stephen Moyer has been cast in Priest, the Paul Bettany-led, Scott Stewart-directed thriller about “a warrior priest [Bettany] who turns against the church to track down a murderous band of vampires who kidnapped his niece,” according to Variety. Moyer will play Bettany’s brother, and 90210’s Lily Collins has been cast as the niece. They join the already-announced Maggie Q and Twilight’s Cam Gigandet in the film.