30 Days Of Night: Dark Days (2010)

A year after the Alaskan town of Barrow';s population was decimated by vampires during its annual month-long polar night, Stella Oleson travels the world trying to convince others that vampires exist. She is fully aware of the risk to the life that her work could bring, but does not care due to her grief over the death of her husband Eben. With nothing remaining to live for, and nothing left to fear, Stella joins their mission and ventures into the uncharted underbelly of Los Angeles where she pushes herself to the most extreme limits to stop the evil from striking again.