Dominion (2006)

Torrance, CA was considered one of the safest cities in Los Angeles County until a local horror novelist's character, a Vampire Guardian Angel, comes to life and throws the city's police force and its detective into a panic. Finding his victims through their prayers of despair and suicidal thoughts, this powerful new breed of Vampire is capable of hunting by daylight, is immune to religious objects, and is even deadlier at night. Don't pray in despair, because that's how he finds you!