Mark Billingham

A reader's own imagination is a far more powerful form of CGI than anything any movie can provide because it's unique. In your own imagination, you can enter all sorts of worlds, and they are unique to you because no other reader will interpret a book the same way.

I think readers' imaginations are far more powerful than anything you can put on a page and, therefore, can conjure up graphic images for themselves, which I think you just have to nudge them towards.

Ian Rankin's Rebus is the king of modern British crime fiction. He is dour, determined, and constantly falls foul of his seniors. For all this, we root for him. He is eminently loveable, a quixotic hero moving through the darker half of a Jekyll and Hyde Edinburgh.

It may sound surprising, but a joke and a crime novel work in very much the same way. The comedian/writer leads their audience along the garden path. The audience know what's coming, or at least they think they do until they get hit from a direction they were not expecting.

Too much research can be the writer's enemy. You can spend days on end in the British Library or prowling the streets with a Dictaphone, and it's easy to convince yourself that you're working hard. Often, it can be an excuse not to work; a classic displacement activity.

There are a number of writers who believe it is their duty to throw as many curve balls at the reader as possible. To twist and twist again. These are the Chubby Checkers of crime fiction and, while I admire the craft, I think that it can actually work against genuine suspense.

There have been some brilliant and very successful standalone books that work in themselves and also seem to refresh a series. Anyone who writes a series lives in fear of it becoming stale, so you do whatever you can to keep it fresh - although it does feel a bit nerve-racking to write outside of your comfort zone.

If the weather is nice, I play tennis, which is pretty much the only exercise that I do. I try to do that as much as I can.