This isn't going to be a review of the story - because I'm only half way through. Rather, it is an appreciation of the style. When you read a book that seems to have been written effortlessly, know that the writer sweated blood over it. This is the case with Robert Harris's writing. Such a complex story, such a smooth style. Marvellous.I am also enjoying the 'pulse' of the story. Writers are often advised to put their heroes into difficulty - to make them suffer. But if this is not punctuated by small victories along the way, the story as a whole can become the narrative version of a dirge in music. A story needs a pulse. Positive and negative, following on from each other. Volition and passivity. Crisis and victory. Light and dark. These are the tones with which the storyteller paints. Harris does this beautifully.