"The wonder to me is," I replied, "that he has escaped death at the hands of the Hashishin. He is a supremely daring man, for I should think that he must be carrying the slipper of the Prophet about with him!"
"I would rather he did it than I!" commented Bristol. "For sheer audacity commend me to The Stetson Man! His idea no doubt was to use you as intermediary in his negotiations with the Museum authorities, but that plan failing, he has written them direct, thoughtfully omitting his address, of course!"
We were, in fact, at that moment bound for the Museum to inspect this latest piece of evidence.
"The crowning example of the man's audacity and cleverness," added my companion, "is his having actually approached Hassan of Aleppo with a similar proposition! How did he get in touch with him? All Scotland Yard has failed to find any trace of that weird character!"
"Birds of a feather—" I suggested.
"But they are not birds of a feather!" cried Bristol. "On your own showing, Hassan of Aleppo is simply waiting his opportunity to balance Dexter's account forever! I always knew Dexter was a clever man; I begin to think he's the most daring genius alive!"
We mounted the steps of the Museum. In the hallway Mostyn, the curator, awaited us. Having greeted Bristol and myself he led the way to his private office, and from a pigeon-hole in his desk took out a letter typewritten upon a sheet of quarto paper.
Bristol spread it out upon the blotting pad and we bent over it curiously.
SIR— I believe I can supply information concerning the whereabouts of the missing slipper of Mohammed. As any inquiry of this nature must be extremely perilous to the inquirer and as the relic is a priceless one, my fee would be 10,000 pounds. The fanatics who seek to restore the slipper to the East must not know of any negotiations, therefore I omit my address, but will communicate further if you care to insert instructions in the agony column of Times. Faithfully, EARL DEXTER
Bristol laughed grimly.