‘Just asking,' Bazo replied.

‘He's won prizes,' said Cal, with some pride. He was keeping his eyes glued to 33, but the pigeon showed no sign of wanting to fly; just preened his wing feathers, and once in a while turned a beady eye up to the sky.

‘Stay there...' Cal told the bird under his breath,'... don't move.'

Then, to Gideon: ‘Is it all right if I go in? Try and catch him?'

‘Help yourself. The old girl who had the house's been carted off to hospital. We're taking the furniture to pay her bills.'

Cal ducked through into the yard, negotiating the bric-a-brac the trio had dumped there, and went into the house.

It was a shambles inside. If the occupant had ever owned anything of substance it had long since been removed. The few pictures still hanging were worthless: the furniture was old, but not old enough to have come back into fashion; the rugs, cushions and curtains so aged they were fit only for the incinerator. The walls and ceilings were stained by many years accrual of smoke, its source the candles that sat on every shelf and sill, stalactites of yellowed wax depending from them.

He made his way through the warren of pokey, dark rooms, and into the hallway. The scene was just as dispiriting here. The brown linoleum tucked up and torn, and everywhere the pervasive smell of must and dust and creeping rot, she was well out of this squalid place, Cal thought, wherever better off in hospital, where at least the sheets were dry.

He began to climb the stairs. It was a curious sensation ascending into the murk of the upper storey, becoming blinder stair by stair, with the sound of birds scurrying across the slates above his skull, and beyond that the muted cries of gull and crow. Though it was no doubt self-deception, he seemed to hear their voices circling as though this very place were the centre of their attentions. An image appeared in his head, of a photograph from National Geographical. A study of stars, taken with a slow release camera, the pin-point lights describing circles as they moved, or appeared to move, across the sky, with the Pole Star, the Nail of Heaven, steady in their midst.