There's a really classic cliche every time you switch the TV on - you see cops arguing. I have spent a day a week for many years in the presence of police and I have never seen them argue. It's a military hierarchy. They do what they're told. There's no bickering.

Most of us have one big idea at some point in our lives. That Eureka! moment. It comes to us all in different ways, often by chance of serendipity.

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

Women are afraid of walking at night, that someone pulls them into an alley and rapes them. That almost never happens. I mean, 98% of people who are raped, are raped by somebody they know. Somebody goes too far. But the destruction is just the same.

Police do get obsessed with solving crimes. You know, particularly if there's been a murder, it becomes personal for the police officer very quickly, and it gets to the family. Even after they've retired, they carry on, not letting go.

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.

Brighton has two universities. It's got a massive young, middle-class community, and the largest gay community in the UK. The result of which is a huge recreational drug market. It's the favoured place to live in the UK for first division criminals.