I had an eye test this week. ‘Excellent peripheral vision’, said the optician after I looked for the flashing lights at the edges of the screen, pressing the button whenever I saw one. Have you done that test? It’s like a game.So, that means that I can see what’s happening away from the centre of my vision. Maybe that extends to my writing too.

As I carried on ‘plotting’ over the past few days, I wondered whether I am too interested in the ‘peripherals’, that is what’s happening away from the main action of my story, at the expense of the principal storyline. That was the problem with the first novel I ever wrote. What about ‘point of view’? said my ‘professional critic. And it was a fair question. In every scene, what caught my eye was someone at the edge of the action, watching, listening, thinking, reacting. That felt right to me as the writer, but I was persuaded that the reader might find it confusing. So I try now to decide at the beginning of each chapter, whose shoulder am I sitting on in this scene? Sometimes the POV might switch from one paragraph to the next within a single chapter, but that would be rare and deliberate, not continual and accidental as it had been in the first draft of ‘A Good Liar’. I think maintaining that discipline has probably been helpful, but I still yearn for the ‘triangulation’ you can get when the same events are witnessed and commented on by a range of people.

As I prepare to start writing the first full draft of Book 5, I wonder whether I can experiment a little this time: have my previous four books given me permission to push against the constraints of style without losing my readers? Life is complex: the same events can be perceived quite differently by different participants.

We’ll see. As the starting point of writing gets closer I find myself itching to get going, now that the planning and research is almost done. And you know where my cursed peripheral vision is taking me now? Even before I’ve started on writing Book 5, I’m thinking about Book 6.

Stop it, Ruth. Focus. Focus.