Låt den rätte komma in (2008) Sweden
This is a truly original vampire film. The vampire is a 12 year old girl who has been a 12 year old girl vampire for a long time. She and her middle-aged male accomplice have just moved into a small block of flats in a Swedish suburb. Her accomplice sets about mugging humans for their blood which he drains into a container to bring home to the vampire.
He's not terribly stealthy and narrowly avoids being caught a the crime scene. Because he has failed to bring home the blood, she is forced to hunt. By then she is so hungry she doesn't bother to leave the housing development and grabs the first guy who comes along, and her attack is witnessed. Soon all the neighbors are alarmed because people are going missing and their bodies are discovered. A woman is bitten and survives to become a vampire herself but later commits suicide by exposing herself to sunlight.
The most interesting part of this film is the relationship that develops between the vampire girl and a 12 year old boy she befriends. He's being bullied by some local thugs and she encourages him to fight back. Meanwhile, one of the locals suspects the new tenants of being the serial killers and invades the vampire's apartment. The vampire girl is nearly incinerated by sunlight but her young friend is there to save her.
I don't want to spoil it so that's all. Rent it. Enjoy it. It's a soulful vampire movie with a great musical score.