We are all Completely Beside Ourselves, by Karen Joy Fowler

it is difficult to write about this book because you really don't want to say too much to anyone who has yet to have the pleasure of reading it, except to say that it is about a family in which the father is an experimental psychologist and the narrator is one of the daughters. The family has fallen apart and the pain of her siblings' disappearance is constantly in the mind of the daughter. But there is great humour and wit in the telling of the story which makes it quite an addictive read. It also has an interesting structure - the narrator starts in the middle and then has to tell the beginning, and as she says, the ending is also a beginning. It was shortlisted for the Booker Prize but it didn't win.