‘They’ll know by now that it was Wentworth’s interference that saved his life, sir. And thwarted them.’

‘Not them, Fanshawe. I don’t believe we’re dealing with a conspiracy. These are people who define themselves by their reverence for monarchy. The British strand may be in bad odour with one of them at the moment but they are and always will be impressed by royal favour. They accept Wentworth as a sort of chargée d’affaires, the effective and unthreatening mouthpiece of our establishment. And so, gentlemen, like it or not, she is!’

Bacchus produced the camera bag he’d slung from one shoulder. ‘Not sure what you want me to do with this?’

Joe walked over to the easel he’d installed by the window and flung back the covering sheet.

‘Lord!’ Fanshawe exclaimed, recognizing it. ‘Not that again! It’s the God-awful Russian painting. What are you doing with that daub, sir?’

‘It has its part to play in the little show I’m putting on. Hocus pocus, Fanshawe. Never disregard it. The picture belongs to Wentworth. A thoughtful gift from HRH for services rendered. I’ve examined it closely — more closely, I’d guess, than the Russian contingent have. It’s sending us a message. One that I think we can interpret in our own way and call to the attention of the princess and her coterie. Can you take a snap of it in this light with your equipment, Bacchus?’

The Branch man appeared delighted to be challenged and set about putting his camera pieces together, muttering happily of lenses and focal lengths and distances as he worked.

The preliminaries complete, the men looked at each other in satisfaction.

‘Do we have to wait for the constable or shall we set about it now and present her with a fait accompli? She is, after all, just delivering the package,’ Fanshawe wanted to know.

Joe appeared to be choosing his words. ‘The princess will interrogate her — in the most civilized way, of course. And our would-be assassin will most likely be listening in. One would hope so. I would like Wentworth to be familiar with the facts and sufficiently in command of the strategy to be able to improvise if necessary. She has to understand the importance of the offer she is about to extend to the Russians. I want her to be listening when we put it together. Wentworth is not to be regarded as cannon fodder — she’s a well-aimed bullet.’ He looked at the clock. ‘I asked her for nine … though her time-keeping seems to be a bit erratic. So …’