This book concerns Mrs Ranelagh (her full first name is never given) investigating the death of a former neighbour, a black woman with Tourette's syndrome, which took place 20 years ago. She and her husband have been living abroad since then. At first her obsession with a neighbour's death seems implausible, but it gradually becomes apparent that she feels wronged by other happenings at that time and that her quest is not for justice, but revenge. There are some other features of the book which are implausible, not least the killer's motive, and the description of Richmond-upon-Thames does not accord with my recollections of the place at roughly the same period. However, the real problem with the book is the sourness which occasionally creeps into this author's other works and is predominant here.