The environmentalists were saying that there were over 200 oil and gas installations on the UK Continental Shelf, and they all had a finite production life. The government seemed to be backing an option which would leave the majority of the deep-water platforms in place, with only minimal maintenance. There was even talk of selling them off for alternative use – plans included prisons and casino/hotel complexes. The government and the oil companies were talking cost-effectiveness, and about striking a balance between cost, safety and the environment. The protesters’ line was: the environment at any cost. Stoked up from their victory over Shell with the Brent Spar, the pressure groups were planning to make Bannock an issue too, and would be holding marches, rallies, and an open-air concert close to the site of the Aberdeen convention.

Aberdeen: fast becoming the centre of Rebus’s universe.

He finished his whisky, decided against a second, then changed his mind. Flicked through the rest of the paper: nothing new on Johnny Bible. There was a property section; he checked the Marchmont/Sciennes prices, then laughed at some of the New Town specs: ‘luxurious townhouse, elegant living on five floors …’; ‘garage for sale separately, £20,000’. There were still a few places in Scotland where £20,000 would buy you a house, maybe with the garage thrown in. He looked down the ‘Country Property’ list, saw more wild prices, flattering photos attached. There was a place on the coast south-east of the city, picture windows and sea views, for the price of a Marchmont flat. Dream on, sailor …

He walked home, got in his car, and drove out to Craigmillar, one area of the city not yet represented in the property section, and not likely to be for some time to come.

The night shift was just about to come off. Rebus saw officers he hadn’t seen before. He asked around: it had been a quiet night; the cells were empty, ditto the biscuit-tins. In the Shed, he sat at his desk and saw new paperwork staring up at him. He fetched himself a coffee and picked up the first sheet.

More dead ends on Allan Mitchison; the head of his children’s home interviewed by local CID. A check of his bank account, nothing amiss. Nothing from Aberdeen CID on Tony El. A woolly suit came in with a package addressed to Rebus. Postmarked Aberdeen, a printed label: T-Bird Oil. Rebus opened it. Publicity material, a compliment slip from Stuart Minchell, Personnel Dept. Half a dozen A4 pamphlets, quality layout and paper, colour throughout, facts kept to a minimum. Rebus, author of five thousand reports, knew waffle when he saw it. Minchell had enclosed a copy of ‘T-BIRD OIL – STRIKING THE BALANCE’, identical to the one in the side pocket of Mitchison’s rucksack. Rebus opened it, saw a map of the Bannock field, laid out across a grid showing which blocks it occupied. A note explained that the North Sea had been divided into blocks of 100 square miles apiece, and oil companies initially made bids for exploration rights to these blocks. Bannock was slap-bang up against the international boundary – a few miles east and you came to more oil fields, but this time Norwegian rather than British.