The year is 1967. Malcolm Pomerantz is twelve, geeky and socially awkward, while his seriously bright sister, Amalia, is spirited and beautiful. Each is the other's best friend, united by a boundless interest in the world beyond their dysfunctional parents' unhappy home. But even the troubled Pomerantz household will seem to be a heaven compared to the house next door, after and enigmatic and very secretive new neighbor takes up the residence in the darkest hours of the night.