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, I should have said to you: nobody got in, because the only way to get through a door fastened with one of those locks is to break the door down. But here we have a lock that can be opened with a key. Now the key does not exist of which one cannot get an impression, and there is not such a thing as an impression from which one cannot manufacture a false key. The murderer could easily have got into the house with a duplicate key."
The magistrate raised a further objection.
"If the murderer had got in from outside he would inevitably have left some traces round about the château, but there aren't any."
"Yes there are," Juve retorted. "First of all there is this piece of an ordnance map which I found yesterday between the château and the embankment." He took it from his pocket as he spoke. "It is an odd coincidence that this scrap shows the neighbourhood of the château of Beaulieu."
"That doesn't prove anything," said the magistrate. "To find a piece of a map of our district in our district is the most natural thing possible. Now if you were to discover the rest of this map in anybody's possession, then —— "
"You may rest assured that I shall try to do so with the least possible delay," said Juve gently. "But this is not the only argument I have to support my theory. This morning, when I was walking near the embankment, I found some very suspicious footprints. It is true there are any number of footprints near the end of the Verrières tunnel, where the navvies are at work. But at the other end of the tunnel, where there is no occasion for anyone to pass by, I found that the earth of the embankment, which was crisp with the frost, had been disturbed, showing that someone had clambered up the embankment; the tips of his shoes had been driven into the earth, and I could see distinctly where his feet had been placed; but unfortunately the soil there is so dry that the footprints were too faint for me to hope to be able to identify the maker of them. But the fact remains that someone did climb up the embankment, someone who was making for the railway."
The magistrate did not seem to be impressed by Juve's discovery.
"And pray what conclusion do you think ought to be drawn from that?" he enquired.
Juve sat down in an easy chair, threw back his head and closed his eyes as if he were about to indulge in a long soliloquy, and began to express his thoughts aloud.
"Suppose we were to combine the two hypotheses into one; to wit, that the murderer was in the château prior to the accomplishment of the crime and left the château directly it was accomplished. What should you say, sir, of a criminal completing his deed, then hurrying over the couple of miles that separate Beaulieu from the railway, and catching a passing train, and on his way climbing the embankment at the spot where I found the footprints I mentioned."
"I should say," the magistrate replied, "that you can't jump into a moving train as you can into a passing tram, and further, that at night none but express trains run between Brives and Cahors."
"All right," said Juve: "I will merely point out that owing to the work on the line at present, all trains have stopped at the beginning of the tunnel for the last two months. If the murderer had planned to escape in that way he might very well have been aware of this regular stoppage."
The magistrates confidence was a little shaken by these new deductions on the part of the detective, but he submitted yet another objection.
"We have not found any traces round about the château."
"Strictly speaking, no, we have not," Juve admitted; "but it is clear that if the murderer walked on the grass, and he probably did so, he walked on it during the night, that is to say, before the morning dew. Now everybody knows that when the dew rises in the early morning, grass that has been bent down by any passing man or animal, stands up again in its original position, thereby destroying all traces; so if the murderer did walk on the lawn when he was getting away, nobody could tell that he had done so. Nevertheless, on the lawn in front of the window of the room where the murder was committed I have observed, not exactly footprints, but signs that the earth has been disturbed at that spot. I imagine that if I were to jump out of a first floor window on to the soft surface of a lawn, and wanted to efface the marks of my boots, I should smooth the earth and the grass around them in just the same way that the little piece of lawn I speak of seems to have been smoothed."
"I should like to have a look at that," said M. de Presles.
"Well, there's no difficulty about it," Juve replied. "Come along."
The two men hurried down the staircase and out of the house. When they reached the patch of grass which the inspector said had been "made up," they crouched down and scrutinised it closely. Just by the side of the grass, even overhanging it a little, a large rhubarb plant outspread its thick, dentelated leaves almost parallel with the soil. Juve happened to glance casually at the nearest leaf, and uttered an exclamation of surprise and gratification.
"Gad, here's something interesting!" and he drew the magistrate's attention to some little pilules of earth with which the plant was peppered.
"What is that?" enquired M. de Presles.
"Earth," said Juve, who had swept the top of the leaf with the palm of his hand; "ordinary earth, like the rest ten inches below, on the grass."
"Well, what about it?" said the puzzled magistrate.
"Well," said Juve with a smile, "I imagine that ordinary earth, or any kind of earth, has no power to move of its own volition, much less to jump up ten inches into the air and settle on the top of a leaf, even a rhubarb leaf! So I conclude that since this earth did not get here by itself it was brought here. How? That is very simple! Somebody has jumped on to the grass there, M. de Presles; he has removed the marks of his feet by smoothing the earth with his hands; the earth soiled his hands, and he rubbed one against the other quite mechanically; the earth which was on his hands fell off in little balls on to the rhubarb leaf, and remained there for us to discover. And so it is certain — this is one proof more — that even if the murderer did not get in from outside, he did at any rate take to flight after he had committed the crime."
"So it can't be Charles Rambert after all," said the magistrate.
"It 'ought to be' Charles Rambert!" was Juve's baffling reply.
The magistrate waxed irritable.
"My dear sir, your everlasting contradictions end by being rather absurd! You have hardly finished building up one laborious theory before you start knocking it down again. I fail to understand you."
Juve smiled at M. de Presles' sudden irritability, but quickly became grave again.
"I am anxious not to be led away by any preconceived opinion. I put the hypothesis that so and so is guilty, and examine all the arguments in support of that theory; then I submit that the crime was committed by somebody else, and proceed in the same way. My method certainly has the objection that it confronts every argument with a diametrically opposite one, but we are not concerned with establishing any one case in preference to another — it is the truth, and nothing else, that we have to discover."
"And that is tantamount to saying that in spite of the overwhelming circumstantial evidence, and in spite of the fact that he has run away, Charles Rambert is innocent?"
"Charles Rambert is the culprit, sir,"