Not being invited in is one of the boxes on the “suspicious behavior” bingo form that every copper carries around in their head along with “stupidly overpowerful dog” and being too quick to supply an alibi. Fill all the boxes and you too could win an all-­expenses-paid visit to your local police station.

The motto of West African cooking is that if the food doesn't set fire to the tablecloth the cook is being stingy with the pepper.

On the plus side, there were no rioters in sight but on the minus side this was probably because everywhere I looked was on fire.

You put a spell on the dog," I said as we left the house. "Just a small one," said Nightingale. "So magic is real," I said. "Which makes you a...what?" "A wizard." "Like Harry Potter?" Nightingale sighed. "No," he said. "Not like Harry Potter." "In what way?" "I'm not a fictional character," said Nightingale.

Despite my mum being from a small village in the middle of a forest, I'm not a country person. I don't like my bacon sandwich to be curiously snuffling at my fingers. But sometimes being police means holding your breath and fondling a pig.

I gave the prescribed Metropolitan Police "first greeting". "Oi!" I said "What do you think you're doing?

If you ask any police officer what the worst part of the job is, they will always say breaking bad news to relatives, but this is not the truth. The worst part is staying in the room after you've broken the news, so that you're forced to be there when someone's life disintegrates around them. Some people say it doesn't bother them - such people are not to be trusted.