Old Joe Hunt looked at his watch and smiled. ‘Finn, I retire in five years. And I shall be happy to give you a reference if you care to take over.’ And he wasn’t taking the piss either.

At assembly one morning, the headmaster, in the sombre voice he kept for expulsions and catastrophic sporting defeats, announced that he was the bearer of grievous news, namely that Robson of the Science Sixth had passed away during the weekend. Over a susurrus of awed mutterings, he told us that Robson had been cut down in the flower of youth, that his demise was a loss to the whole school, and that we would all be symbolically present at the funeral. Everything, in fact, except what we wanted to know: how, and why, and if it turned out to be murder, by whom.

‘Eros and Thanatos,’ Adrian commented before the day’s first lesson. ‘Thanatos wins again.’

‘Robson wasn’t exactly Eros-and-Thanatos material,’ Alex told him. Colin and I nodded agreement. We knew because he’d been in our class for a couple of years: a steady, unimaginative boy, gravely uninterested in the arts, who had trundled along without offending anyone. Now he had offended us by making a name for himself with an early death. The flower of youth, indeed: the Robson we had known was vegetable matter.

There was no mention of disease, a bicycling accident or a gas explosion, and a few days later rumour (aka Brown of the Maths Sixth) supplied what the authorities couldn’t, or wouldn’t. Robson had got his girlfriend pregnant, hanged himself in the attic, and not been found for two days.

‘I’d never have thought he knew how to hang himself.’

‘He was in the Science Sixth.’

‘But you need a special sort of slip knot.’

‘That’s only in films. And proper executions. You can do it with an ordinary knot. Just takes longer to suffocate you.’

‘What do we think his girlfriend’s like?’