John Ajvide Lindqvist's international bestseller Let the Right One In is "a brilliant take on the vampire myth, and a roaring good story" (New York Times bestselling author Kelley Armstrong), the basis for the multi-film festival award-winning Swedish film, the U.S. adaptation Let Me In directed by Matt Reeves (The Batman), and the Showtime TV series.

It is autumn 1981 when inconceivable horror comes to Blackeberg, a suburb in Sweden. The body of a teenager is found, emptied of blood, the murder rumored to be part of a ritual killing. Twelve-year-old Oskar is personally hoping that revenge has come at long last-revenge for the bullying he endures at school, day after day.

But the murder is not the most important thing on his mind. A new girl has moved in next door-a girl who has never seen a Rubik's Cube before, but who can solve it at once. There is something wrong with her, though, something odd. And she only comes out at night. . .