As a writer, it’s rare when you can pinpoint the moment a whole book series came to you.
This is probably why so many authors hate That Question. You know, the ‘Where do you get your ideas from?’ one, which is often so hard to answer. But with my series of books based around a fictional Metropolitan police department that investigates supernatural crime, I know exactly where I was: halfway across my bedroom floor, about to get into bed. The story idea hit me like a thunderbolt, literally stopping me in my tracks.
In some ways it was a journey that started with my first published book, a supernatural young adult thriller called My first four books (as Caroline Green) were all YA but in more recent times I’d been publishing psychological thrillers for grown ups under the name Cass Green. These had sold well, and I had a couple of bestsellers, but I was starting to want to write something a bit different. I had a vague idea about a serial killer who
