'Go on,' I told him.

'While he was working in the Foreign Office, Sakkas, who had access to the ultra-classified files, blew his cover because of a woman and was sent down for life on a charge of high treason – this was four years ago. During the final months of the Soviet empire he escaped from special confinement by killing two guards – quietly with a piano-wire garotte – and commandeering a fishing vessel on the south coast. The owner's body was washed up at Dover three days later with a harpoon still in its throat.'

I thought I heard shots in the distance, couldn't be sure: the walls of the church were massive stone.

Croder's head was tilted: perhaps he'd heard the same thing. 'Reaching Moscow,' he said, 'with assistance from a special Soviet escort en route, Sakkas was immediately awarded the Order of Lenin for his services in London and given the rank of colonel in the KGB. A month later he was offered the Order of the Red Banner, the Order of the Patriotic War First Class, and the Order "For Personal Valour" – presumably for so expertly dispatching the two prison guards at Wormwood Scrubs and the owner of the fishing-boat. These bonus honours he refused: in some ways your Vasyl Sakkas is a modest man; or to put it another way he doesn't like too much limelight. With the regime on its way out at the time he may have decided that the Order of Lenin and the other gongs wouldn't mean a great deal to him in the future.'

Croder turned and sat down on the bench below the effigy of St Marius, resting his claw on his knees and looking up at me with his eyes shadowed by the glow of the votive candles.