Let Me In (2010)

Owen is 12 years-old, his parents are no longer together and he has no friends. He's also being bullied at school and lives a dreary existence. Late one night he meets Abby, also 12, who has moved in next door. She doesn't say much about herself and doesn't go to school. Meanwhile, a detective is investigating a series of murders where people have been drained of their blood. Owen and Abby are lonely souls who find comfort in one another and Abby gives him the strength to face his tormentors. Abby has secrets as well that touch directly on the police investigation.—garykmcd