When I plan a new book, first and foremost in my mind are my characters, and the dramas I’m about to put them through. I might have an idea of surroundings, but I don’t normally firm up the location until I’m literally about to start writing that first chapter. That’s not usually a problem as I tend to base many of my books in Liverpool where I live, so I ought to know it quite well.

I like setting scenes in areas of Liverpool that aren’t so well-known, but are familiar to me – or so I presume until I have to describe something in detail. There have been quite a few times when I’ve had to make an emergency dash so I can describe the colour of a particular set of railings, or the view from a particular entrance.

Sometimes I’ll use a little poetic licence and alter locations if there’s something about the setting that doesn’t quite work, and I also mix things up deliberately to avoid moving my characters into some poor unsuspecting person’s home. In The Missing Husband, you won’t find Beaumont Avenue in Liverpool, and you’d be hard pressed to find the short cut to West Allerton station.

There was one time when I almost came unstuck trying to find the right location for my novel. In Where I Found You, there’s a park that’s central to the plot as it’s where my main characters frequently meet. Before I’d even begun to write the story, I’d formed a very clear picture in my head of what it should look like – only to realise that of all the parks I knew in Liverpool, none were quite right. I extended the search using Google Earth but to no avail, the park didn’t exist anywhere except in my imagination, and that was why I created a whole new town called Sedgefield, which is nestled ‘somewhere,’ in the Cheshire countryside.

I returned to Sedgefield in my novella If I Should Go, and more recently in The Affair. When I was planning The Affair, I knew straight away that I didn’t want to use a real location, or more to the point, I didn’t want to use a real school. The story focuses on a pregnant school girl called Scarlett, and it’s her teacher who falls under suspicion. It felt wrong scandalising a school that actually existed. What would the pupils think, or the teachers for that matter? Despite the chaos I unleashed on the town this time around, I enjoyed my return visit to Sedgefield, and there’s always a chance I’ll go back there again some day.