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.

I'm just an entertainer. In a way crime stories are boring. A crime's been committed and at the end you know it will be solved. So you've got to make the story interesting besides it just being a plot. And that's why character matters, why you've got to make the characters interesting.

Many Scandinavian writers who had made their name in literary fiction felt they wanted to have a go at the crime novel to show they could compete with the best. If Salman Rushdie had been Norwegian, he would definitely have written at least one thriller.

Let me say here and now that faith has never done me any good, only doubt. So that is what has become my testament.

Phantom' was for me an interesting technique of telling the story. You have one voice that it is in the present telling what is happening, and then there's one voice from the past that's also driving the story forward. And you know that the two story lines will meet eventually.

Until the Eighties, Oslo was a rather boring town, but it's changed a lot, and is now much more cosmopolitan. If I go downtown, I visit the harbour to see the tall ships and the ferries, and to admire the modern architecture such as the Opera House or the new Astrup Fearnley Museum on the water's edge.

Crime fiction is a genre for writing stories about people - about conflict, about guilt, about passion, about the human condition.