“ ‘That will do, Mr. Melas,’ said he. ‘You perceive that we have taken you into our confidence over some very private business. We should not have troubled you, only that our friend who speaks Greek and who began these negotiations has been forced to return to the East. It was quite necessary for us to find someone to take his place, and we were fortunate in hearing of your powers.’

“I bowed.

“ ‘There are five sovereigns here,’ said he, walking up to me, ‘which will, I hope, be a sufficient fee. But remember,’ he added, tapping me lightly on the chest and giggling, ‘if you speak to a human soul about this⁠—one human soul, mind⁠—well, may God have mercy upon your soul!’ ”