When I was a teenager, my father went bust. He could have declared himself bankrupt, but he was an honourable man and he insisted on paying back all his debts. That almost ruined the family. I was aware that my mother and father couldn't control things anymore. I guess I was afraid that we would end up on the street.

Intuition is just the sum of all your experience. The way I see it, everything you’ve experienced, everything you know, you think you know and didn’t know you knew is there in your subconscious lying dormant, as it were. As a rule you don’t notice the sleeping creature, it’s just there, snoring and absorbing new things, right. But now and then it blinks, stretches and tells you, hey, I’ve seen this picture before. And tells you where in the picture things belong.

What do we mean by 'crazy?' What do we mean by 'mad?' At what point is a person just different and at what point can we call it a disease and say that they are not responsible for their actions? Or are we all slaves to the chemical processes that go on in our brains?

Thanks to the success of Henning Mankell and Peter Hoeg, there wasn't the same stigma attached to writing genre thrillers in Scandinavia as there was in many other cultures. Quite the opposite, in fact.

My influence is probably more from American crime writers than any Europeans. And I hardly read any Scandinavian crime before I started writing myself. I wasn't a great crime reader to begin with.

But perhaps that's why we take snaps...to provide false evidence to underpin the false claim that we were happy. Because the thought that we weren't happy at least for some time during our lives is unbearable. Adults order children to smile in the photos, involve them in the lie, so we smile, we feign happiness.

I was sleeping in a water bed for a couple of years, recommended by my doctor. I was never comfortable in that water bed. In the middle of the night you would hear something happening - water and bubbles. I would always think there was some intelligent life in the water bed.