For a novel less than 20 years old, John Ajvide Lindqvist’s Let he Right One In has spawned enough adaptations that its title now doubles as a guide: be careful, for not all versions of this Swedish horror romance are created equal.
The essential adaptation is the 2008 Swedish film, which introduced the wider world to the romance between Oskar, a lonely, bullied 12-year-old, and his new neighbour Eli, a centuries-old vampire in the body of a pre-teen girl.
