As a result of that thought, I spent the next hour writing a safety protocol for interviewing potential practitioners. This involved interviewing in pairs, and ensuring that one colleague is always placed behind the subject and has fast access to a CO2 fire extinguisher. ‘A fire extinguisher?’ asked Vanessa. ‘For distraction,’ I said. ‘It’s hard to cast a spell when somebody sprays one at your head. A bucket of iced water is even better, but they tend to be a bit conspicuous in the normal policing environment.’
