The title of the film (as well as the novel upon which it was based) refers to the fact that, according to myth, vampires must be invited in before they can enter someone's home (this is shown in the film when Eli asks Oskar to invite her into his apartment). The English-translated title of the book and film, "Let The Right One In," is taken from lyrics to the song "Let the Right One Slip In" by Morrissey.
Let the Right One In
Set in 1982 in the suburb of Blackeberg, Stockholm, twelve-year-old Oskar is a lonely outsider, bullied at school by his classmates; at home, Oskar dreams of revenge against a trio of bullies. He befriends his twelve-year-old, next-door neighbor Eli, who only appears at night in the snow-covered playground outside their building.
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