Neither light nor presumably cameras were much use when the wind, as it now did once more, drove a rolling barrage of sleet and dendral debris across this wilderness.

Wield said, 'These are the precautions I mentioned, sir. We've got duckboards down. Try and stay on them else you could need a block and tackle.'

Was he taking the piss? The Fat Man trod gingerly on the first duckboard and felt it sink into the glutinous mud. He decided the sergeant was just being typically precise.

The wooden pathway zigzagged through the mire to avoid the craters left by uprooted trees, finally coming to a halt at the edge of one of the largest and deepest. Here there was some protection from a canvas awning which every blast of wind threatened to carry away along with the two constables whose manful efforts were necessary to keep its metal poles anchored in the yielding clay.

At the bottom of the crater a man was taking photographs whose flash revealed on the edge above him, crouched low to get maximum protection from the billowing canvas, another figure studying something in a plastic bag.

'Good God,' said Dalziel. 'That's never Troll Longbottom?'

'Mr Longbottom, yes, sir,' said Wield. 'Seems he was dining with Dr Batty, that's ALBA's Research Director, when the security staff rang him to say what had happened. Dr Batty's up at the house.'

'And Troll came too? Must've been losing at cards or summat.'

Thomas Roland Longbottom, consultant pathologist at the City General, was notoriously unenthusiastic about on-site examinations. 'You want a call-out service, join the AA,' he'd once told Dalziel.

His forenames had been compressed to Troll in early childhood, and whether the sobriquet in any way predicated his professional enthusiasm for dead flesh and loose bones was a question for psycholinguistics. Dalziel doubted it. They'd played in the same school rugby team and the Fat Man claimed to have seen Longbottom at the age of thirteen devour an opponent's ear.