He turned out to be wrong in almost every respect, but by the time he’d figured that out it was too late – somebody else had been teaching magic since the 1950s. I don’t know why Nightingale was so surprised – I barely knew four and a half spells and you couldn’t have got me to give it up and that’s despite close brushes with death by vampire, hanging, malignant spirit, riot, tiger-man and the ever-present risk of overdoing the magic and getting a brain aneurysm.

As far as we could reconstruct it, Geoffrey Wheatcroft, an undistinguished wizard by all accounts, had retired post-war to teach theology at Magdalen College, Oxford. At some point in the mid-1950s he had sponsored a student dining club called the Little Crocodiles. Dining clubs being what posh undergraduates did in the fifties and sixties when they weren’t having doomed love affairs, spying for the Russians or inventing modern satire.

To spice up their evenings, Geoffrey Wheatcroft taught a select number of his young friends the basics of Newtonian magic, which he should not have done, and trained at least one of them up to what Nightingale called ‘mastership’ – which he really should not have done. At some point, we don’t know when, this apprentice moved to London and went to the dark side. Actually, Nightingale never calls it the dark side, but me and Lesley can’t resist it.

He did terrible things to people, I know, I’ve seen some of it – the bodyless head of Larry the Lark and the other denizens of the Strip Club of Doctor Moreau – and Nightingale has seen more but won’t talk about it.

We know from eyewitness accounts that he used magic to conceal his features. He appeared to have become inactive in the late 1970s and, as far as we could tell, his mantle was not taken up until the one we call the Faceless Man burst onto the scene some time in the last three or four years. He came this close to blowing my head off the previous October and I wasn’t in a hurry to meet him again. Not without backup anyway.

However, having an ethically challenged magician running around on our manor was not on. So we decided to adopt an intelligence-led approach to his apprehension. Intelligence-led policing being when you work out what you’re doing before you run in and get your head blown off. Hence us working our way down the list of possible known associates and looking to winkle out the Faceless Man’s real identity. Because if it wasn’t a vulnerability why would he want to keep it a secret.