This is not a book for me, upon reflection. It is meant to be a psychological thriller according to the blurb but I find it too intense, too involved in unnecessary detail which, for me, slowed down what would otherwise have been an interesting thriller.
The storyline is not new. A wronged husband sets out to have her lover take the blame for her death/murder.
And then, after quite a few pages, almost half the book, actually, along comes a feisty PI Grace Cornish. This does liven up the book to say the least and we begin to lose the input of the first character - the builder Lewis - as Grace sets out to determine how the wife was killed. Guildford must be an easy-going place to live if Grace's actions are symptomatic of the residents there.
The killer, for me, is just not potrayed as evil enough although Grace has her work cut out dealing with his attempts to bump her off, too. Whether he succeeds will be for the reader to discover; after all, the title says it all........