I travel abroad constantly on book promotion and research, and the Internet is invaluable to me for accessing U.K. news in places such as America, which most of the time hasn't heard of England.

What Brighton's got is a major sea port on either side, good for importing drugs, great for exporting cash, stolen cars, stolen antiques. It's got the largest number of antique shops in the UK, so it's a great place to fence stolen goods. It's got tremendous communication: you've got the sea ports, you've got the channel tunnel, you've got Gatwick Airport 25 minutes away, and London's 50 minutes away by train. So all these escape routes... Which is what villains like.

Stalin was experimenting with telepathy in the 1930's. Winston Churchill had a paranormal office, trying to get people to travel out of their bodies and see behind enemy lines in the Second World War. And the Pentagon... The X-Files is based on a real department in the Pentagon, that's still there now. Pretty much every government, probably as far back in time as we can go, has one. And the police will quite often - and when I say often, I mean often - they will go to mediums if all else fails in the enquiry.

I guess a lot of police keep their sanity by developing black humour.

Brighton is a beautiful seaside city, but it's got a dark underbelly.

Most good police officers are very open-minded. The bad ones are the ones who are close-minded.

There's a difference between what I call a dumb ghost and a smart ghost. The smart ghost is Hamlet's father - you know, he says, "Get revenge, my son!" That's incredibly rare. It's much more the grey lady in the same place everyday, moving across the floor.