Stockholm Click to see full answer. Besides, is let the right one in in English? Swedish Additionally, what is the movie Let the Right One In about? When Oskar (Kåre Hedebrant), a sensitive, bullied 12-year-old boy living with his mother in suburban Sweden, meets his new neighbor, the mysterious and moody Eli (Lina Leandersson), they strike up a friendship. Initially reserved with each other, Oskar and Eli slowly form a close bond, but it soon becomes apparent that she is no ordinary young girl. Eventually, Eli shares her dark, macabre secret with Oskar, revealing her connection to a string of bloody local murders. In this manner, how long is let the right one in? 1h 55m Why is it called Let the Right One In?The title refers to the Morrissey song “Let the Right One Slip In”. It is a play on the concept in vampire folklore which says that vampires cannot enter a house unless invited. The American version is called Let Me In because the publishers believed that the original title was too long.