“Let the Right One In” author John Ajvide Lindqvist’s “Star” is a full-blooded novel of cosmic, chthonic horror about a child prodigy. Terese was supposed to become the perfect instrument through which the perfect music would enter the world. She is found in the forest by a former rock musician, Lennart—a half-alive baby in a plastic bag sprinkled with earth. Discovering in the child an extraordinary musical gift, Lennart becomes obsessed. He raises his little star in the basement, in secret from everyone—so that the dissonance of the cruel world won’t destroy the purity of her sound. For a time, no one suspects that the world should be afraid of this… But first, the world will be in awe when Terese finally demonstrates her gift by performing on the TV show “Become a Star.” Another little girl watches her on television and realizes that their meeting was predetermined. Destiny itself arranged for them to become a duet—the scariest duet imaginable.