I bought The Accidental based on the Publisher's Weekly plot description of a British family of four -- the Smarts -- who are on the verge of meltdown: "Into this family drops one Amber MacDonald, a mysterious stranger who embeds herself in the family's summer rental in Norfolk and puts them all under her bullying spell. By some collective hallucination ... each Smart sees Amber as a savior, even as she violates their codes and instincts."
The reason I'm taking it along on carpool duty, sneaking a page or two while I idle at the curb waiting for dance class to end, is that I can't resist the utterly believable world that author Ali Smith has constructed by writing, in turn, from the viewpoint of each family member, beginning with 12-year-old Astrid. Writing from a child's perspective is a tightrope act that some authors (like Michael Frayn in Spies) perform better than others (Donna Tartt). Smith channels a child with the pitch-perfect confidence of Harper Lee.