"Very surprising; and goes to show that although the crime in itself is a common, sordid one, the criminal may have had higher, or at any rate different, aspirations from those which would lead an ordinary ruffian to commit murder for the sake of robbery. The age and social position and personality of Mme. de Langrune make it very unlikely that she had enemies, or was the object of vengeance, and therefore if she was got rid of, it was very likely that she might be robbed — but robbed of what? Was there something more important than money or jewels to be got? I frankly admit that although I put the question I am at a loss how to answer it."
"Obviously," murmured the magistrate again, still more puzzled by all these logical deductions.
Juve proceeded with the development of his ideas.
"And now suppose we are face to face with a crime committed without any motive, as a result of some morbid impulse, a by no means uncommon occurrence, monomania or temporary insanity?
"In that case, although, in consequence of the crapulous nature of the crime, I had previously dismissed the very serious presumption of guilt attaching to young Rambert, I should be inclined to reconsider my opinion and think it possible that he might be the culprit. We know very little about the young fellow from the physiological point of view; in fact we don't know him at all; but it seems that his family is not altogether normal, and I understand that his mother's mental condition is precarious. If for a moment we regard Charles Rambert as a hysterical subject, we can associate him with the murder of the Marquise de Langrune without thereby destroying our case that the crime is a crapulous one, for a man of only medium physical strength, when suffering from an attack of mental alienation, has his muscular power increased at least tenfold during his paroxysms. Under such influence as that Charles Rambert might have committed murder with all the fierce brutality of a giant!
"But I shall soon be in possession of absolutely accurate knowledge as to the muscular strength of the murderer," Juve proceeded. "Quite lately M. Bertillon invented a marvellous dynamometer which enables us not only to ascertain what kind of lever has been used to force a lock or a piece of furniture, but also to determine the exact strength of the individual who used the tools. I have taken samples of the wood from the broken drawer, and I shall soon have exact information."
"That will be immensely important," M. de Presles agreed. "Even if it does away with our present certainty of Charles Rambert's guilt, we shall be able to find out whether the murder was committed by any other occupant of the house — still assuming that it was committed by some member of the household."
"With regard to that," said Juve, "we can proceed with our method of deduction and eliminate from our field of observation everybody who has a good alibi or other defence; it will be so much ground cleared. For my own part I find it impossible to suspect the two old maidservants, Louise and Marie; the tramps whom we have detained and subsequently released are too simple-minded, elementary people to have been capable of devising the minute precautions which demonstrate the subtle cleverness of the man who murdered the Marquise. Then there is Dollon; but I imagine you will agree with me in thinking that his alibi removes him from suspicion — more especially as the medical evidence proves that the murder was committed during the night, between two and three o'clock."
"Only M. Etienne Rambert is left," the magistrate put in, "and about nine o'clock that evening he left the d'Orsay station in the slow train which reaches Verrières at 6.55 a.m. He spent the whole night in the train, for he certainly arrived by that one. He could not have a better alibi."
"Not possibly," Juve replied. "So we need only trouble ourselves with Charles Rambert," and warming up to the subject the detective proceeded to pile up a crushing indictment against the young man. "The crime was committed so quietly that not the faintest sound was heard; therefore the murderer was in the house; he went to the Marquise's room and announced his arrival by a cautious tap on the door; the Marquise then opened the door to him, and was not surprised to see him, for she knew him quite well; he went into her room with her and —— "
"Oh, come, come!" M. de Presles broke in; "you are romancing now, M. Juve; you forget that the bedroom door was forced, the best proof of that being the bolt, which was found wrenched away and hanging literally at the end of the screws."
"I was expecting you to say that, sir," said Juve with a smile. "But before I reply I should like to show you something rather quaint." He led the way across the passage and went into the bedroom of the Marquise, where order had now been restored; the dead body had been removed to the library, which was transformed into a chapelle ardente, and two nuns were watching over it there. "Have a good look at this bolt," he said to M. de Presles. "Is there anything unusual about it?"
"No," said the magistrate.
"Yes, there is," said Juve; "the slide-bolt is out, as when the bolt is fastened, but the socket into which the slide-bolt slips to fasten the door to the wall is intact. If the bolt really had been forced, the socket would have been wrenched away too." Juve next asked M. de Presles to look closely at the screws that were wrenched halfway out of the door. "Do you see anything on those?"
The magistrate pointed to their heads.
"There are tiny scratches on them," he said, rather hesitatingly, for in his inmost heart he knew the detective's real superiority over himself, "and from those I must infer that the screws have not been wrenched out by the pressure exerted on the bolt, but really unscrewed, and therefore —— "
"And therefore," Juve broke in, "this is a mere blind, from which we may certainly draw the conclusion that the murderer wished to make us believe that the door was forced, whereas in reality it was opened to him by the Marquise. Therefore the murderer was personally known to her!"
"The murderer was personally known to her," he repeated. "Now I should like to remind you of young Charles Rambert's equivocal behaviour in the course of the evening that preceded the crime. It struck President Bonnet and shocked the priest. I also recall his hereditary antecedents, his mothers insanity, and finally —— " Juve broke off abruptly and unceremoniously dragged the magistrate out of the room and into Charles Rambert's bedroom. He hurried into the dressing-room adjoining, went down on his knees on the floor, and laid a finger on the middle of the oil-cloth that was laid over the boards. "What do you see there, sir?" he demanded.
The magistrate adjusted his eyeglass and, looking at the place indicated by the detective, saw a little black stain; he wetted his finger, rubbed it on the spot, and then, holding up his hand, observed that the tip of his finger was stained red.
"It is blood," he muttered.
"Yes, blood," said Juve, "and I gather from this that the story of the blood-stained towel which M. Rambert senior found among his son's things, and the sight of which so greatly impressed Mlle. Thérèse, was not an invention on that young lady's part, but really existed; and it forms the most damning evidence possible against the young man. He obviously washed his hands after the crime in the water from the tap over this wash-hand basin here, but one drop of blood falling on the towel and dripping on to the floor has been enough to give him away."
The magistrate nodded.
"It is conclusive," he said. "You have just proved to demonstration, M. Juve, that Charles Rambert is the guilty party. It is beyond argument. It is conclusive — conclusive!"
There were a couple of seconds of silence, and then Juve suddenly said "No!"
"No!" he repeated; "it is quite true that we can adduce perfectly logical arguments to show that the murder was committed by some member of the household and that, therefore, Charles Rambert is the only possible culprit; but we can adduce equally logical arguments to show that the crime was committed by some person who got in from outside: there is nothing to prove that he did not walk into the house through the front door."
"The door was locked," said the magistrate.
"That's nothing," said Juve with a laugh. "Don't forget that there isn't such a thing as a real safety lock nowadays — since all locks can be opened with an outside key. If I had found one of the good old-fashioned catch locks on the door, such as they used to make years ago,