Lily grunted. ‘And we know what that signifies. It’s just another way of celebrating the destruction of the matriarchal society and its replacement with a patriarchal one.’

Joe shot a warning glare across the table. ‘Stop right there. I must ask you, Wentworth, not to bend my ear with all that suffragist talk. You’re preaching to the converted. The Pankhurst ladies are good friends of my mother’s and therefore — of mine.’

‘Well, I’ve never heard of your Morana — I think you’re making her up — but it wouldn’t surprise me if she existed. She’s probably Celtic in origin like the Morrigan … similar names. Same root? All these stories come with a warning — women are nasty, dangerous creatures. Chuck ’em off the nearest bridge.’

The flippant comment provoked a dry response. ‘No use. They’d bob to the surface in that annoying way they have and float, then we medieval-minded men would have the bother of fishing them out and burning them. Look here, I think we can manage without pudding, don’t you? In all the excitement I forgot to warn you that we’re expected for tea at Cassandra’s. Better leave room for the tea cakes.’ He signalled to the waiter that he’d like his bill. ‘She’s got her two boys back home and I think she rather wants to introduce us to the new head of the family. We’ve just got time to go back to my office and take a proper look at that painting.’

‘I see a Russian landscape. Desolate place, miles from anywhere … probably Siberia. Summer time — there’s no snow. Thick forest,’ Lily offered in return to his challenge.

‘You’re not looking carefully enough. Stand closer.’ Joe put a hand on her shoulders and steered her towards the canvas. Surely this bright girl could see what he was seeing? ‘It’s all in the detail. It’s summer time, yes. Forest — yes. And I think the trees: birch, larch, pine … and the soggy terrain … would indicate a scene in the Ural mountains. But miles from anywhere? No. I think we can tie this spot down very precisely. In fact I can point it out to you on a map.’

He produced a map of Asia from a drawer of his desk and, after a moment’s search, found the place he was looking for. Lily’s eyes widened as she read off the name and she went back to stare at the painting.

He followed her. ‘There, what do you see on the horizon?’

‘I think I see the gates of hell,’ Lily murmured. ‘Hieronymus Bosch would have admired this.’

‘Many would agree with that interpretation. A hellish place. And it’s not imaginary. It’s very real. What seems to be the entrance to the underworld or a town on fire is the heat and smoke of dozens of factories, smelting works, and mineral processing plants. The biggest iron works in Europe is what you see belching away there, Wentworth. And the whole hot nastiness is emanating from a mineral-rich earth. There’s a saying that “If you haven’t found gold within twenty miles of Ekaterinburg, it’s because you haven’t looked for it.” Precious stones and metals — they’ve been dug out of the soil here and fashioned into the jewels and precious objects that decorated the Tsar’s palaces for years.’