‘Ah! a gold tooth.’
‘Exactly. That’s really the crux of the matter.’
Poirot nodded his head several times.
‘I begin to comprehend. Go on.’
‘Well, as I say. I just noticed the fellow. I was travelling, by the way, to New York. Six months later I was in Los Angeles, and I noticed the fellow again. Don’t know why I should have—but I did. Still, nothing in that.’
‘Continue.’
‘A month afterwards I had occasion to go to Seattle, and shortly after I got there who should I see but my friend again, only this time he wore a beard.’
‘Distinctly curious.’
‘Wasn’t it? Of course I didn’t fancy it had anything to do with me at that time, but when I saw the man again in Los Angeles, beardless, in Chicago with a moustache and different eyebrows and in a mountain village disguised as a hobo—well, I began to wonder.’
‘Naturally.’
‘And at last—well, it seemed odd—but not a doubt about it. I was being what you call shadowed.’
‘Most remarkable.’
‘Wasn’t it? After that I made sure of it. Wherever I was, there, somewhere near at hand, was my shadow made up in different disguises. Fortunately, owing to the gold tooth, I could always spot him.’
‘Ah! that gold tooth, it was a very fortunate occurrence.’
‘It was.’
‘Pardon me, M. Martin, but did you never speak to the man? Question him as to the reason of his persistent shadowing?’
‘No, I didn’t.’ The actor hesitated. ‘I thought of doing so once or twice, but I always decided against it. It seemed to me that I should merely put the fellow on his guard and learn nothing. Possibly once they had discovered that I had spotted him, they would have put someone else on my track—someone whom I might not recognize.’
‘En effet…someone without that useful gold tooth.’
‘Exactly. I may have been wrong—but that’s how I figured it out.’
‘Now, M. Martin, you referred to “they” just now. Whom did you mean by “they”?’
‘It was a mere figure of speech used for convenience. I assumed—I don’t know why—a nebulous “they” in the background.’
‘Have you any reason for that belief?’
‘None.’
‘You mean you have no conception of who could want you shadowed or for what purpose?’
‘Not the slightest idea. At least—’
‘Continuez,’ said Poirot encouragingly.
‘I have an idea,’ said Bryan Martin slowly. ‘It’s a mere guess on my part, mind.’
‘A guess may be very successful sometimes, Monsieur.’
‘It concerns a certain incident that took place in London about two years ago. It was a slight incident, but an inexplicable and an unforgettable one. I’ve often wondered and puzzled over it. Just because I could find no explanation of it at the time, I am inclined to wonder if this shadowing business might not be connected in some way with it—but for the life of me I can’t see why or how.’
‘Perhaps I can.’
‘Yes, but you see—’ Bryan Martin’s embarrassment returned. ‘The awkward thing is that I can’t tell you about it—not now, that is. In a day or so I might be able to.’
Stung into further speech by Poirot’s inquiring glance he continued desperately.
‘You see—a girl was concerned in it.’
‘Ah! parfaitement! An English girl?’
‘Yes. At least—why?’
‘Very simple. You cannot tell me now, but you hope to do so in a day or two. That means that you want to obtain the consent of the young lady. Therefore she is in England. Also, she must have been in England during the time you were shadowed, for if she had been in America you would have sought her out then and there. Therefore, since she has been in England for the last eighteen months she is probably, though not certainly, English. It is good reasoning that, eh?’
‘Rather. Now tell me, M. Poirot, if I get her permission, will you look into the matter for me?’
There was a pause. Poirot seemed to be debating the matter in his mind. Finally he said:
‘Why have you come to me before going to her?’
‘Well, I thought—’ he hesitated. ‘I wanted to persuade her to—to clear things up—I mean to let things be cleared up by you. What I mean is, if you investigate the affair, nothing need be made public, need it?’