Overview:

Let the Right One In, a novel by John Ajvide Lindqvist, tells the story of Oskar, a lonely and bullied 12-year-old boy living in a suburban Swedish town in the early 1980s. Oskar befriends Eli, a mysterious girl who moves into his apartment complex. Eli is revealed to be a vampire, appearing youthful but carrying the burden of centuries of life and experience.