'Never mind about him,' Millington said. 'He's part of the scenery.'

All the world went past those windows on racing afternoons, which was why, of course, the windows were where they were. Over three long sessions during a single week on three different racecourses Millington pointed out to her almost every known associate and friend of Filmer's, but she shook her head to them all. At the fourth attempt, the following week, Filmer himself strolled past, and I thought we'd have a repeat of the hysterics: but though our chambermaid wobbled and wept and begged for repeated assurances he would never know she had seen him, she stayed at her post. And she astonished us, shortly after, by pointing towards a group of passing people we'd never before linked with Filmer.

'That's him,' she said, gasping 'Oh my God… that's him… I'd know him anywhere.'

'Which one?' Millington said urgently.

'In the navy… with the grey sort of hair. Oh my God… don't let him know…' Her voice rose with panic.

I could hear the beginnings of Millington 's reassurances as I fairly sprinted out of the office and through to the open air, slowing there at once to the much slower speed of the crowd making its way from paddock to stands for the next race. The navy suit with the silvery hair above it was in no hurry, going along with the press. I followed him discreetly for the rest of the afternoon, and only once did he touch base with Filmer, and then as if accidentally, as between strangers.

The exchange looked as if navy-suit asked Filmer the time. Filmer looked at his watch and spoke. Navy-suit nodded and walked on. Navy-suit was Filmer's man, all right, but was never to be seen to be that in public: just like me and Millington.