But Skinner was wrong.
He was standing by the gun, training his night-glasses on the National Art Gallery, looking for any sign of intruders. For he suddenly felt acutely aware that the building was currently housing an international exhibition of the life's work of Rembrandt. It had been brought to the Edinburgh Festival under the sponsorship of a major insurance company, and it was worth, conservatively, over a hundred million pounds.
'Forget the banks. That's only money,' he said softly to the night, his thoughts gathering speed. 'Anybody with the resources to fund what we've just seen doesn't need money. But what if he wants something else, something unique, just for himself, and will go to any lengths, any cost? There's only one other collection in Edinburgh as valuable as that exhibition, and we're up here guarding that.'
Then he heard the strange sound in the dark, and knew at once, with his detective's instinct, that the National Gallery was not the target – and that his germ of an idea had been right all along.
The Royal Regalia of Scotland are not nearly as famous as their English counterparts in the Tower of London, and they have been admired by far fewer tourists over the years. Indeed, most Scots do not even know they art there. Since the Union of the Kingdoms almost five hundred years ago, only King Charles II, then an exile and outlawed by Cromwell, has been crowned in Scotland. Thus the Honours of Scotland – as they are sometimes called – are, in main, older than the Crown Jewels of England. They are also, in their own way, beyond price. Therefore they are guarded in the most effective manner possible, by the army itself, in the heart of the garrisoned citadel of Edinburgh, which stands impregnable on its rock – unless, in some dire emergency, that garrison were to be flushed out.
Without waiting to discover exactly what that sound in the dark had been, but sensing its meaning anyway. Skinner grabbed his radio and spoke urgently into the open channel.
'Get some back-up here to the Castle. They're after the Crown Jewels! •