Out For Blood (2004)

Out For Blood is a 2004 American horror film, written and directed by Richard Brandes, and starring by Kevin Dillon, Vanessa Angel, Jody Lyn O'Keefe, Kenneth Colom, Vanessa Angel, and Lance Henriksen.

Plot
In Los Angeles, Detective Hank Holten (Dillon) is obsessed by his ex-wife, the writer of vampire novels Susan Hastings (Angel), stalking her and having drinking problems. His chief and friend, Captain John Billings (Henriksen), makes him promise to forget her and stop drinking, and assigns Hank to find Layla Simmons (O'Keefe), who is missing and without notice to her family. Hank goes to a rave party, finds Layla, and they go to an orgy party in an old building. While having sex with her, Hank finds that the place is a vampire nest. He is bitten by the vampire-leader (Ismael Kanater), but nobody believes on him. He looks for Susan to help him.