"Read the mark there, in tiny letters: Cassette, 6a, Opera."
   "Cannot English people buy canes in Paris?"
   When Rouletabille had seen me into the train, he said:
   "You'll remember the address?"
   "Yes,--Cassette, 6a, Opera.  Rely on me; you shall have word
   tomorrow morning."
   That evening, on reaching Paris, I saw Monsieur Cassette, dealer in
   walking-sticks and umbrellas, and wrote to my friend:
   "A man unmistakably answering to the description of Monsieur Robert
   Darzac--same height, slightly stooping, putty-coloured overcoat,
   bowler hat--purchased a cane similar to the one in which we are
   interested, on the evening of the crime, about eight o'clock.
   Monsieur Cassette had not sold another such cane during the last two
   years.  Fred's cane is new.  It is quite clear that it's the same
   cane.  Fred did not buy it, since he was in London.  Like you, I
   think that he found it somewhere near Monsieur Robert Darzac.  But
   if, as you suppose, the murderer was in The Yellow Room for five,
   or even six hours, and the crime was not committed until towards
   midnight, the purchase of this cane proves an incontestable alibi
   for Darzac."
   CHAPTER XIII
   "The Presbytery Has Lost Nothing of Its Charm, Nor the Garden
   Its Brightness"
   A week after the occurrence of the events I have just recounted--on
   the 2nd of November, to be exact--I received at my home in Paris the
   following telegraphic message: "Come to the Glandier by the earliest
   train.  Bring revolvers.  Friendly greetings.  Rouletabille."
   I have already said, I think, that at that period, being a young
   barrister with but few briefs, I frequented the Palais de Justice
   rather for the purpose of familiarising myself with my professional
   duties than for the defence of the widow and orphan.  I could,
   therefore, feel no surprise at Rouletabille disposing of my time.
   Moreover, he knew how keenly interested I was in his journalistic
   adventures in general and, above all, in the murder at the Glandier.
   I had not heard from him for a week, nor of the progress made with
   that mysterious case, except by the innumerable paragraphs in the
   newspapers and by the very brief notes of Rouletabille in the
   "Epoque."  Those notes had divulged the fact that traces of human
   blood had been found on the mutton-bone, as well as fresh traces of
   the blood of Mademoiselle Stangerson--the old stains belonged to
   other crimes, probably dating years back.
   It may be easily imagined that the crime engaged the attention of
   the press throughout the world.  No crime known had more absorbed
   the minds of people.  It appeared to me, however, that the judicial
   inquiry was making but very little progress; and I should have been
   very glad, if, on the receipt of my friend's invitation to rejoin
   him at the Glandier, the despatch had not contained the words,
   "Bring revolvers."
   That puzzled me greatly.  Rouletabille telegraphing for revolvers
   meant that there might be occasion to use them.  Now, I confess it
   without shame, I am not a hero.  But here was a friend, evidently
   in danger, calling on me to go to his aid.  I did not hesitate long;
   and after assuring myself that the only revolver I possessed was
   properly loaded, I hurried towards the Orleans station.  On the way
   I remembered that Rouletabille had asked for two revolvers; I
   therefore entered a gunsmith's shop and bought an excellent weapon
   for my friend.
   I had hoped to find him at the station at Epinay; but he was not
   there.  However, a cab was waiting for me and I was soon at the
   Glandier.  Nobody was at the gate, and it was only on the threshold
   of the chateau that I met the young man.  He saluted me with a
   friendly gesture and threw his arms about me, inquiring warmly as
   to the state of my health.
   When we were in the little sitting-room of which I have spoken,
   Rouletabille made me sit down.
   "It's going badly," he said.
   "What's going badly?" I asked.
   "Everything."
   He came nearer to me and whispered:
   "Frederic Larsan is working with might and main against Darzac."
   This did not astonish me.  I had seen the poor show Mademoiselle
   Stangerson's fiance had made at the time of the examination of the
   footprints.  However, I immediately asked:
   "What about that cane?"
   "It is still in the hands of Frederic Larsan.  He never lets go
   of it."
   "But doesn't it prove the alibi for Monsieur Darzac?"
   "Not at all.  Gently questioned by me, Darzac denied having, on
   that evening, or on any other, purchased a cane at Cassette's.
   However," said Rouletabille, "I'll not swear to anything; Monsieur
   Darzac has such strange fits of silence that one does not know
   exactly what to think of what he says."
   "To Frederic Larsan this cane must mean a piece of very damaging
   evidence.  But in what way?  The time when it was bought shows it
   could not have been in the murderer's possession."
   "The time doesn't worry Larsan.  He is not obliged to adopt my
   theory which assumes that the murderer got into The Yellow Room
   between five and six o'clock.  But there's nothing to prevent him
   assuming that the murderer got in between ten and eleven o'clock
   at night.  At that hour Monsieur and Mademoiselle Stangerson,
   assisted by Daddy Jacques, were engaged in making an interesting
   chemical experiment in the part of the laboratory taken up by the
   furnaces.  Larsan says, unlikely as that may seem, that the murderer
   may have slipped behind them.  He has already got the examining
   magistrate to listen to him.  When one looks closely into it, the
   reasoning is absurd, seeing that the 'intimate'--if there is one
   --must have known that the professor would shortly leave the
   pavilion, and that the 'friend' had only to put off operating till
   after the professor's departure.  Why should he have risked crossing
   the laboratory while the professor was in it?  And then, when he
   had got into The Yellow Room?
   "There are many points to be cleared up before Larsan's theory can
   be admitted.  I sha'n't waste my time over it, for my theory won't
   allow me to occupy myself with mere imagination.  Only, as I am
   obliged for the moment to keep silent, and Larsan sometimes talks,
   he may finish by coming out openly against Monsieur Darzac,--if
   I'm not there," added the young reporter proudly.  "For there are
   surface evidences against Darzac, much more convincing than that
   cane, which remains incomprehensible to me, all the more so as
   Larsan does not in the least hesitate to let Darzac see him with
   it!--I understand many things in Larsan's theory, but I can't make
   anything of that cane.
   "Is he still at the chateau?"
   "Yes; he hardly ever leaves it!--He sleeps there, as I do, at the
   request of Monsieur Stangerson, who has done for him what Monsieur
   Robert Darzac has done for me.  In spite of the accusation made by
   Larsan that Monsieur Stangerson knows who the murderer is he yet
   af 
					     					 			fords him every facility for arriving at the truth,--just as
   Darzac is doing for me."
   "But you are convinced of Darzac's innocence?"
   "At one time I did believe in the possibility of his guilt.  That
   was when we arrived here for the first time.  The time has come
   for me to tell you what has passed between Monsieur Darzac and
   myself."
   Here Rouletabille interrupted himself and asked me if I had brought
   the revolvers.  I showed him them.  Having examined both, he
   pronounced them excellent, and handed them back to me.
   "Shall we have any use for them?" I asked.
   "No doubt; this evening.  We shall pass the night here--if that
   won't tire you?"
   "On the contrary," I said with an expression that made Rouletabille
   laugh.
   "No, no," he said, "this is no time for laughing.  You remember the
   phrase which was the 'open sesame' of this chateau full of mystery?"
   "Yes," I said, "perfectly,--'The presbytery has lost nothing of its
   charm, nor the garden its brightness.' It was the phrase which you
   found on the half-burned piece of paper amongst the ashes in the
   laboratory."
   "Yes; at the bottom of the paper, where the flame had not reached,
   was this date: 23rd of October.  Remember this date, it is highly
   important.  I am now going to tell you about that curious phrase.
   On the evening before the crime, that is to say, on the 23rd,
   Monsieur and Mademoiselle Stangerson were at a reception at the
   Elysee.  I know that, because I was there on duty, having to
   interview one of the savants of the Academy of Philadelphia, who
   was being feted there.  I had never before seen either Monsieur or
   Mademoiselle Stangerson.  I was seated in the room which precedes
   the Salon des Ambassadeurs, and, tired of being jostled by so many
   noble personages, I had fallen into a vague reverie, when I scented
   near me the perfume of the lady in black.
   "Do you ask me what is the 'perfume of the lady in black'?  It must
   suffice for you to know that it is a perfume of which I am very fond,
   because it was that of a lady who had been very kind to me in my
   childhood,--a lady whom I had always seen dressed in black.  The
   lady who, that evening, was scented with the perfume of the lady in
   black, was dressed in white.  She was wonderfully beautiful.  I
   could not help rising and following her.  An old man gave her his
   arm and, as they passed, I heard voices say: 'Professor Stangerson
   and his daughter.'  It was in that way I learned who it was I was
   following.
   "They met Monsieur Robert Darzac, whom I knew by sight.  Professor
   Stangerson, accosted by Mr. Arthur William Rance, one of the
   American savants, seated himself in the great gallery, and Monsieur
   Robert Darzac led Mademoiselle Stangerson into the conservatory.  I
   followed.  The weather was very mild that evening; the garden doors
   were open.  Mademoiselle Stangerson threw a fichu shawl over her
   shoulders and I plainly saw that it was she who was begging Monsieur
   Darzac to go with her into the garden.  I continued to follow,
   interested by the agitation plainly exhibited by the bearing of
   Monsieur Darzac.  They slowly passed along the wall abutting on the
   Avenue Marigny.  I took the central alley, walking parallel with
   them, and then crossed over for the purpose of getting nearer to
   them.  The night was dark, and the grass deadened the sound of my
   steps.  They had stopped under the vacillating light of a gas jet
   and appeared to be both bending over a paper held by Mademoiselle
   Stangerson, reading something which deeply interested them.  I
   stopped in the darkness and silence.
   "Neither of them saw me, and I distinctly heard Mademoiselle
   Stangerson repeat, as she was refolding the paper: 'The presbytery
   has lost nothing of its charm, nor the garden its brightness!'--It
   was said in a tone at once mocking and despairing, and was followed
   by a burst of such nervous laughter that I think her words will
   never cease to sound in my ears.  But another phrase was uttered by
   Monsieur Robert Darzac: 'Must I commit a crime, then, to win you?'
   He was in an extraordinarily agitated state.  He took the hand of
   Mademoiselle Stangerson and held it for a long time to his lips,
   and I thought, from the movement of his shoulders, that he was
   crying.  Then they went away.
   "When I returned to the great gallery," continued Rouletabille, "I
   saw no more of Monsieur Robert Darzac, and I was not to see him
   again until after the tragedy at the Glandier.  Mademoiselle was
   near Mr. Rance, who was talking with much animation, his eyes,
   during the conversation, glowing with a singular brightness.
   Mademoiselle Stangerson, I thought, was not even listening to what
   he was saying, her face expressing perfect indifference.  His face
   was the red face of a drunkard.  When Monsieur and Mademoiselle
   Stangerson left, he went to the bar and remained there.  I joined
   him, and rendered him some little service in the midst of the
   pressing crowd.  He thanked me and told me he was returning to
   America three days later, that is to say, on the 26th (the day after
   the crime).  I talked with him about Philadelphia; he told me he
   had lived there for five-and-twenty years, and that it was there he
   had met the illustrious Professor Stangerson and his daughter.  He
   drank a great deal of champagne, and when I left him he was very
   nearly drunk.
   "Such were my experiences on that evening, and I leave you to
   imagine what effect the news of the attempted murder of Mademoiselle
   Stangerson produced on me,--with what force those words pronounced
   by Monsieur Robert Darzac, 'Must I commit a crime, then, to win you?'
   recurred to me.  It was not this phrase, however, that I repeated to
   him, when we met here at Glandier.  The sentence of the presbytery
   and the bright garden sufficed to open the gate of the chateau.  If
   you ask me if I believe now that Monsieur Darzac is the murderer, I
   must say I do not.  I do not think I ever quite thought that.  At
   the time I could not really think seriously of anything.  I had so
   little evidence to go on.  But I needed to have at once the proof
   that he had not been wounded in the hand.
   "When we were alone together, I told him how I had chanced to
   overhear a part of his conversation with Mademoiselle Stangerson in
   the garden of the Elysee; and when I repeated to him the words,
   'Must I commit a crime, then, to win you?' he was greatly troubled,
   though much less so than he had been by hearing me repeat the phrase
   about the presbytery.  What threw him into a state of real
   consternation was to learn from me that the day on which he had
   gone to meet Mademoiselle Stangerson at the Elysee, was the very
   day on which she had gone to the Post Office for the letter.  It
   was that letter, perhaps, which ended with the words: 'The presbytery
   has lost nothing of its charm, nor the garden its brightness.'  My
   surmise was confirmed by my finding, if you remember, in the ashes
   of the laboratory, the fragment  
					     					 			of paper dated October the 23rd.
   The letter had been written and withdrawn from the Post Office on
   the same day.
   "There can be no doubt that, on returning from the Elysee that night,
   Mademoiselle Stangerson had tried to destroy that compromising paper.
   It was in vain that Monsieur Darzac denied that that letter had
   anything whatever to do with the crime.  I told him that in an
   affair so filled with mystery as this, he had no right to hide this
   letter; that I was persuaded it was of considerable importance; that
   the desperate tone in which Mademoiselle Stangerson had pronounced
   the prophetic phrase,--that his own tears, and the threat of a
   crime which he had professed after the letter was read--all these
   facts tended to leave no room for me to doubt.  Monsieur Darzac
   became more and more agitated, and I determined to take advantage
   of the effect I had produced on him.  'You were on the point of
   being married, Monsieur,' I said negligently and without looking
   at him, 'and suddenly your marriage becomes impossible because of
   the writer of that letter; because as soon as his letter was read,
   you spoke of the necessity for a crime to win Mademoiselle
   Stangerson.  Therefore there is someone between you and her someone
   who has attempted to kill her, so that she should not be able to
   marry!'  And I concluded with these words: 'Now, monsieur, you have
   only to tell me in confidence the name of the murderer!'--The words
   I had uttered must have struck him ominously, for when I turned my
   eyes on him, I saw that his face was haggard, the perspiration
   standing on his forehead, and terror showing in his eyes.
   "'Monsieur,' he said to me, 'I am going to ask of you something
   which may appear insane, but in exchange for which I place my life
   in your hands.  You must not tell the magistrates of what you saw
   and heard in the garden of the Elysee,--neither to them nor to
   anybody.  I swear to you, that I am innocent, and I know, I feel,
   that you believe me; but I would rather be taken for the guilty man
   than see justice go astray on that phrase, "The presbytery has lost
   nothing of its charm, nor the garden its brightness."  The judges
   must know nothing about that phrase.  All this matter is in your
   hands.  Monsieur, I leave it there; but forget the evening at the
   Elysee.  A hundred other roads are open to you in your search for
   the criminal.  I will open them for you myself.  I will help you.
   Will you take up your quarters here?--You may remain here to do
   as you please.--Eat--sleep here--watch my actions--the actions
   of all here.  You shall be master of the Glandier, Monsieur; but
   forget the evening at the Elysee.'"
   Rouletabille here paused to take breath.  I now understood what had
   appeared so unexplainable in the demeanour of Monsieur Robert Darzac
   towards my friend, and the facility with which the young reporter
   had been able to install himself on the scene of the crime.  My
   curiosity could not fail to be excited by all I had heard.  I asked
   Rouletabille to satisfy it still further.  What had happened at the
   Glandier during the past week?--Had he not told me that there were
   surface indications against Monsieur Darzac much more terrible than
   that of the cane found by Larsan?
   "Everything seems to be pointing against him," replied my friend,
   "and the situation is becoming exceedingly grave.  Monsieur Darzac
   appears not to mind it much; but in that he is wrong.  I was
   interested only in the  health of Mademoiselle Stangerson, which
   was daily improving, when something occurred that is even more
   mysterious than--than the mystery of The Yellow Room!"
   "Impossible!" I cried, "What could be more mysterious than that?"
   "Let us first go back to Monsieur Robert Darzac," said Rouletabille,
   calming me.  "I have said that everything seems to be pointing
   against him.  The marks of the neat boots found by Frederic Larsan
   appear to be really the footprints of Mademoiselle Stangerson's