I held my head and moaned. He threw me a hand-towel and I used it. ‘What hit me?’

‘I’ve had you on tape the whole time,’ he explained. ‘When you wouldn’t get into the recollection, I tried to nudge you into it by using your own voice as you recounted it before. It works wonders sometimes.’

‘It worked wonders this time,’ I growled. ‘I think I blew a fuse.’

‘In effect, you did. You were on the trembling verge of going into the thing you don’t want to remember, and you let yourself go unconscious rather than do it.’

‘What are you so pleased about?’

‘Last-ditch defence,’ he said tersely. ‘We’ve got it now. Just one more try.’

‘Now hold on. The last-ditch defence is that I drop dead.’

‘You won’t. You’ve contained this episode in your subconscious mind for a long time and it hasn’t hurt you.’

‘Hasn’t it?’

‘Not in terms of killing you.’