‘Professor Maden says you’re a psychopath,’ I said. Tony exhaled, impatiently. ‘I’m not a psychopath,’ he said. There was a short silence. ‘How do you know?’ I asked. ‘They say psychopaths can’t feel remorse,’ said Tony. ‘I feel lots of remorse. But when I tell them I feel remorse they say psychopaths pretend to be remorseful when they’re not.’ Tony paused. ‘It’s like witchcraft,’ he said. ‘They turn everything upside down.’