“Well, since you agree with the first part of my thesis, I shall go on with the second,” continued Wrexham. “The first part establishes, as far as one can, the probability of some forgotten Greek settlement to be found beyond the northeast corner of Kashgaria. If so, it’s more than worth looking for. But before I go on, are either of you prepared to come with me? It’s an eighteen months’ job at the very least, and possibly longer. But it’s worth it, I think. Think of the old scientific blokes in Europe if we come back with an authentic account, complete with photos, and records, and perhaps with some of the inhabitants of an old Greek settlement probably much as it was in the days of Alexander.

“Whether or not there’s money in it, I don’t know. You, Harry, are probably not out for money, having enough for your wants. I am personally, but not much. I’m rather a wanderer, and nothing would please me more than a life of exploration. If we can pull this off, we shall be made men in the exploring world, and can be sure of getting sufficient financial support in future to make further expeditions.”

I’ve said that I’ve always had a taste for travel, and have spent not a little time and money on gratifying it. And here was Wrexham not only holding out a prospect of exploring an entirely unknown bit of the world, but gilding the lily with what looked like very good presumptive evidence of living survivals from past centuries. There was nothing much to draw me home. My only close relative was my sister, made a widow by Loos, who, with her two boys, kept the old manor-house farm warm for me. I had settled part of my income on her, and with that and her own little bit of money, she could keep the manor-house home up comfortably and pay for the boys’ schooling. On chucking the service, my idea had been to spend the summers at home and the winters globe-trotting.

So my mind required no making up.

“Count me in,” I said to Wrexham. “Central Asia’s called me ever since I first came East, and here you are with a whole lot of extra attractions.”

“And you, Alec? You weren’t certain before,” said Wrexham.

Forsyth leaned across the table, took up the picture, and gazed at it again.

“No, but you’d only told me part of the story. I’ll start to-morrow if you like.”

“Good! I thought you would both come. Then, now I’ll go on with the second part of my thesis as to how my great-great-uncle and I found two men under such very similar circumstances. You admit that the coincidence is more than strange.

“You remember that the old man came upon a small enclosed space at the end of the valley full of bones, and among them a new corpse killed by an arrow under the entrance gates.