PART ONE A Second Home

      It is a Saturday, late July, 2000; we are in Reepham, Norfolk, at Owl Cottage. There’s something we have to do today, but we are trying to postpone it. We need to go across the road to see Mr Ewing; we need to ask for a valuation, and see what they think of our chances of selling. Ewing’s are the local firm, and it was they who sold us the house, seven years ago. As the morning wears on we move around each other silently, avoiding conversation. The decision’s made. There’s no more to discuss.

      About eleven o’clock, I see a flickering on the staircase. The air is still; then it moves. I raise my head. The air is still again. I know it is my stepfather’s ghost coming down. Or, to put it in a way acceptable to most people, I ‘know’ it is my stepfather’s ghost.

      I am not perturbed. I am used to ‘seeing’ things that aren’t there. Or—to put it in a way more acceptable to me—I am used to seeing things that ‘aren’t there’. It was in this house that I last saw my stepfather Jack, in the early months of 1995: alive, in his garments of human flesh. Many times since then I have acknowledged him on the stairs.

      It may be, of course, that the flicker against the banister was nothing more than the warning of a migraine attack. It’s at the left-hand side of my body that visions manifest; it’s my left-eye that is peeled.I don’t know whether, at such vulnerable times, I see more than is there; or if things are there, that normally I don’t see.

      Over the years the premonitionary symptoms of migraine headaches have become more than the dangerous puzzle that they were earlier in my life, and more than a warning to take the drugs that might ward off a full-blown attack. They have become a psychic adornment or flourish, an art form, a secret talent I have never managed to make money from. Sometimes they take the form of the visual disturbances that are common to many sufferers. Small objects will vanish from my field of vision, and there will be floating lacunae in the world, each shaped rather like a doughnut with a dazzle of light where the hole should be. Sometimes there are flashes of gold against the wall: darting chevrons, like the wings of small quick angels. Scant sleep and lack of food increase the chances of these sightings; starving saints in Lent, hypoglycemic and jittery, saw visions to meet their expectations.

      Sometimes the aura takes more trying forms. I will go deaf. The words I try to write end up as other words. I will suffer strange dreams, from which I wake with hallucinations of taste. Once, thirty years ago, I dreamt that I was eating bees, and ever since I have lived with their milk-chocolate sweetness and their texture, which is like lightly cooked calves’ liver. It may be that a tune will lodge in my head like a tic and bring the words tripping in with it, so I am forced to live my life by its accompaniment. It’s a familiar complaint, to have a tune you can’t get out of your head. But for most people the tunes aren’t the prelude to a day of hearty vomiting. Besides, people say they pick them up from the radio, but mine are songs people don’t really