I'm interested in Scotland now and then, how it's changed. I want to get the reader to think about that by thinking about something from the past. How has society changed, how has policing changed, have we changed philosophically, psychologically, culturally, spiritually?

At all times, think like a writer, and keep those antennae twitching - that way, you pick up new ideas.

I don't think I have one particular favourite writer. I have many whose works I will always buy or reread - Muriel Spark, Anthony Powell, Robert Louis Stevenson, Ruth Rendell, James Ellroy, William McIlvanney, Kate Atkinson, John Burnside, Louise Welsh, Iain Banks.

A lot of writers, especially crime writers, have an image that we think we're trying to keep up with. You've got to be seen as dark and slightly dangerous. But I'm not like that and I've realised that I don't need to put that on. People will buy the books whether they see a photo of you dressed in black or not.

I'm interested in Scotland now and then, how it's changed. I want to get the reader to think about that by thinking about something from the past. How has society changed, how has policing changed, have we changed philosophically, psychologically, culturally, spiritually?

Right from the very beginning, I knew I wanted to write palpably Scottish fiction.

You wouldn't think you could kill an ocean, would you? But we'll do it one day. That's how negligent we are.