I’ve always loved detective fiction, Agatha Christie, Ruth Rendell, Margery Allingham and PD James, I love them all.

I wanted to have a go at writing a contemporary whodunit, with a credible back story.

Part of the appeal and part of the fascination of the genre is that it has clear rules. I’m intrigued by those rules and I like playing with them. Your detective should always lay out the information fairly for the reader, but he will always be ahead of the game. There are certain immutable laws of detective fiction that I follow.