"In a trap, quite simply."
"Who drove it?"
"The father. This morning the sergeant and I saw the trap and spoke to the father, who was going to market as usual. The son was hidden under the tilt. He took the train at Pompignat and is in Paris by now."
Rénine's explanation, as promised, had taken hardly five minutes. He had based it solely on logic and the probabilities of the case. And yet not a jot was left of the distressing mystery in which they were floundering. The darkness was dispelled. The whole truth appeared.
Madame de Gorne wept for joy and Jérôme Vignal thanked the good genius who was changing the course of events with a stroke of his magic wand.
"Shall we examine those footprints together, Mr. Deputy?" asked Rénine. "Do you mind? The mistake which the sergeant and I made this morning was to investigate only the footprints left by the alleged murderer and to neglect Mathias de Gorne's. Why indeed should they have attracted our attention? Yet it was precisely there that the crux of the whole affair was to be found."
They stepped into the orchard and went to the well. It did not need a long examination to observe that many of the footprints were awkward, hesitating, too deeply sunk at the heel and toe and differing from one another in the angle at which the feet were turned.
"This clumsiness was unavoidable," said Rénine. "Mathias de Gorne would have needed a regular apprenticeship before his backward progress could have equalled his ordinary gait; and both his father and he must have been aware of this, at least as regards the zigzags which you see here since old de Gorne went out of his way to tell the sergeant that his son had had too much drink." And he added "Indeed it was the detection of this falsehood that suddenly enlightened me. When Madame de Gorne stated that her husband was not drunk, I thought of the footprints and guessed the truth."
The deputy frankly accepted his part in the matter and began to laugh:
"There's nothing left for it but to send detectives after the bogus corpse."