-four thousand
pounds, to be liquidated in three instalments, not one of which was
ever paid. This latter amount was probably somewhere near the value of
the five hundred and sixteen separate stones, one of which was of
tremendous size, a very monarch of diamonds, holding its court among
seventeen brilliants each as large as a filbert. This iridescent
concentration of wealth was, as one might say, placed in my care, and
I had to see to it that no harm came to the necklace or to its
prospective owner until they were safely across the boundaries of
France.

The four weeks previous to the thirteenth proved a busy and anxious
time for me. Thousands, most of whom were actuated by mere curiosity,
wished to view the diamonds. We were compelled to discriminate, and
sometimes discriminated against the wrong person, which caused
unpleasantness. Three distinct attempts were made to rob the safe, but
luckily these criminal efforts were frustrated, and so we came
unscathed to the eventful thirteenth of the month.

The sale was to begin at two o'clock, and on the morning of that day I
took the somewhat tyrannical precaution of having the more dangerous
of our own malefactors, and as many of the foreign thieves as I could
trump up charges against, laid by the heels, yet I knew very well it
was not these rascals I had most to fear, but the suave, well-groomed
gentlemen, amply supplied with unimpeachable credentials, stopping at
our fine hotels and living like princes. Many of these were foreigners
against whom we could prove nothing, and whose arrest might land us
into temporary international difficulties. Nevertheless, I had each of
them shadowed, and on the morning of the thirteenth if one of them had
even disputed a cab fare I should have had him in prison half an hour
later, and taken the consequences, but these gentlemen are very shrewd
and do not commit mistakes.

I made up a list of all the men in the world who were able or likely
to purchase the necklace. Many of them would not be present in person
at the auction rooms; their bidding would be done by agents. This
simplified matters a good deal, for the agents kept me duly informed
of their purposes, and, besides, an agent who handles treasure every
week is an adept at the business, and does not need the protection
which must surround an amateur, who in nine cases out of ten has but
scant idea of the dangers that threaten him, beyond knowing that if he
goes down a dark stree