Oskar is a 12yo loner who is bullied at his school in Stockholm. He develops a friendship/romance with his neighbour, Eli, who appears to be a girl his age, but all is not as it seems. Eli is a vampire.
The concept is novel and vastly different from Near Dark (1987) which also had a child vampire befriending a human child. The final 30 minutes of Let The Right One In is killer and the film would be a lot better if the previous 80 minutes wasn’t so slow (and mostly unnecessary, unless you are part of the serious "art" crowd that like that sort of pacing). I did learn some things from this movie, including all Swedish furniture looks like it comes from IKEA and what happens to a vampire when they enter your house uninvited. Don’t watch the dubbed version, it’s too odd, watch it in Swedish with subtitles.