I loved this book. It is the story of two sisters who have been apart for all their adult lives. One sister has stayed reclusively (autistically?) in the family mansion to continue her father’s ‘work’ studying the habits of moths and the other returns after 47 years. Why did she leave? The book concentrates on how these two lived together as children and young women and how their relationships with their parents ‘worked’. It looks at their differing views on events in those childhoods and through their lives; how these have affected them and how their personalities and characters affect their memories and views on events. The family is a little creepy and very dysfunctional. The main outcome after the 47 years is quite easy to guess but this didn’t distract from the story for me and there are plenty of surprises – I loved the details about moths too.