Deborah Schupack, The Boy on the Bus

Deborah Schupack, The Boy on the Bus. This story reminded me of a book I read when I was a little girl - I can't remember the name of it or the details, but it was about a girl who switched places with another child in the past (or future?) and no one really noticed, because no one expected her to be different. In this novel, a boy arrives home from school and his mother Meg is nearly certain it is not her child (almost, but not quite). I think the metaphors and Meg's emotional conflicts were drawn to thickly. The idea was fascinating and the first few chapters were intriguing, but it didn't quite maintain enough depth or complexity to allow the conceit to work. An interesting failure? Now I want to dig up that childhood book and see if it was any good.