The Water's Lovely

I've enjoyed this dark tale The Water's Lovely by Ruth Rendell. As usual, the story is filled with "colourful" characters and the reader is left wondering who the murder victim is going to be. Two sisters, Ismay and Heather, live with a terrible secret. Ismay believes Heather was responsible for the death of their step-father 14 years before but does not confront her about this. Ismay is afraid Heather will kill again and wonders if she should warn Heather's boyfriend, Ed. Instead she records her thoughts on a tape, with disastrous consequences. Another main character, Marion, lives off her wits and finds ways to ingratiate herself with wealthy elderly people for her benefit - an obnoxious person. The truth is of course revealed in the end. 4/5