Tells the story of an obsessive friendship between two women, Jenny and Martha who begin as neighbours, become friends, then rivals, then develop a love-hate relationship.
It's a novel about how things go wrong between them rather than one that keeps you in suspense about what will happen. Almost the first line of the novel, in a prologue narrated from prison, makes clear that eventually one of the central characters will murder the other. It doesn't make clear who kills who. In the subsequent chapters, supposedly based on "edited extracts from the diary of the victim" alternating with "transcripts of statements by the accused" the perspective switches between that of Jennie and that of Martha.
When they first meet, as new mothers who move into adjacent houses, Jennie admires and is jealous of Martha - of her house, gorgeous husband, apparent success in society and as a mother. But then the roles begin to reverse - Jennie becomes more successful as Martha's life falls apart. And the obsession on both sides becomes more and more dangerous ...
Interesting and well crafted but a bit sad and depressing. The author also leaves to the reader's imagination to deduce in several important matters what is actually going on. Those readers who like to be able to use their own imagination will probably appreciate this, those who like to be told exactly what has happened should leave this book alone.