e done openly. In fine, driven to despair, she has committed the
matter to me."

"Than whom," said Dupin, amid a perfect whirlwind of smoke, "no more
sagacious agent could, I suppose, be desired, or even imagined."

"You flatter me," replied the Prefect; "but it is possible that some
such opinion may have been entertained."

"It is clear," said I, "as you observe, that the letter is still in
the possession of the Minister; since it is this possession, and
not any employment of the letter, which bestows the power. With the
employment the power departs."

"True," said G----; "and upon this conviction I proceeded. My first
care was to make thorough search of the Minister's hotel; and here
my chief embarrassment lay in the necessity of searching without his
knowledge. Beyond all things, I have been warned of the danger which
would result from giving him reason to suspect our design."

"But," said I, "you are quite _au fait_ in these investigations. The
Parisian police have done this thing often before."

"Oh yes, and for this reason I did not despair. The habits of the
Minister gave me, too, a great advantage. He is frequently absent from
home all night. His servants are by no means numerous. They sleep at
a distance from their master's apartment, and, being chiefly
Neapolitans, are readily made drunk. I have keys, as you know, with
which I can open any chamber or cabinet in Paris. For three months a
night has not passed during the greater part of which I have not
been engaged, personally, in ransacking the D---- Hotel. My honor is
interested, and, to mention a great secret, the reward is enormous. So
I did not abandon the search until I had become fully satisfied that
the thief is a more astute man than myself. I fancy that I have
investigated every nook and corner of the premises in which it is
possible that the paper can be concealed."

"But is it not possible," I suggested, "that although the letter may
be in the possession of the Minister, as it unquestionably is, he may
have concealed it elsewhere than upon his own premises?"

"This is barely possible," said Dupin. "The present peculiar condition
of affairs at court, and especially of those intrigues in which D----
is known to be involved, would render the instant availability of the
document--its susceptibility of being produced at a moment's notice--a
point of nearly equal importance with its possession."

"Its susceptibility of being produced?" said I.