At that moment, a sound of footsteps, in the corridor, attracted the attention of Séverine.

"Here come Berthe and her husband," she murmured.

The Lachesnayes passed very stiffly before the Roubauds. The young woman did not even give her former comrade a look. An usher at once showed them into the room of the examining-magistrate.

"Oh! dear me! We must have patience," said Roubaud. "We shall be here for at least two hours. Sit you down."

He had just placed himself on the left of Séverine, and, with a motion of the hand, invited Jacques to take a seat near her, on the other side. The driver remained standing a moment longer. Then, as she looked at him in her gentle, timid manner, he sank down on the bench. She appeared very frail between the two men. He felt she possessed a submissive, tender character, and the slight warmth emanating from this woman, slowly torpified him from tip to toe.

In M. Denizet's room the interrogatories were about to commence. The inquiry had already supplied matter for an enormous volume of papers, enclosed in blue wrappers. Every effort had been made to follow the victim from the time he left Paris. M. Vandorpe, the station-master, had given evidence as to the departure of the 6.30 express. How the coach No. 293 had been added on at the last moment; how he had exchanged a few words with Roubaud, who had got into his compartment a little before the arrival of President Grandmorin; finally, how the latter had taken possession of his coupé, where he was certainly alone.

Then, the guard, Henri Dauvergne, questioned as to what had occurred at Rouen during the ten minutes the train waited, was unable to give any positive information. He had seen the Roubauds talking in front of the coupé, and he felt sure they had returned to their compartment, the door of which had been shut by an inspector; but his recollection was vague, owing to the confusion caused by the crowd, and the obscurity in the station. As to giving an opinion whether a man, the famous murderer who could not be found, would have been able to jump into the coupé as the train started, he thought such a thing very unlikely, whilst admitting it was possible; for, to his own knowledge, something similar had already occurred twice.

Other members of the company's staff at Rouen, on being examined on the same points, instead of throwing light on the matter, only entangled it by their contradictory answers. Nevertheless, one thing proved was the shake of the hand given by Roubaud from inside his compartment to the station-master at Barentin, who had got on the step. This station-master, M. Bessière, had formally acknowledged the incident as exact, and had added that his colleague was alone with his wife, who was half lying down, and appeared to be tranquilly sleeping.

Moreover, the authorities had gone so far as to search for the passengers who had quitted Paris in the same compartment as the Roubauds. The stout lady and gentleman who arrived late, almost at the last minute, middle-class people from Petit-Couronne, had stated that having immediately dozed off to sleep, they were unable to say anything; and, as to the woman in black, who remained silent in her corner, she had melted away like a shadow. It had been absolutely impossible to trace her.

Then, there were other witnesses, the small fry who had served to identify the passengers who left the train that night at Barentin, the theory being that the murderer must have got out there. The tickets had been counted, and they had succeeded in recognising all the travellers except one, and he precisely was a great big fellow, with his head wrapped up in a blue handkerchief. Some said he wore a coat, and others a short smock. About this man alone, who had disappeared, vanished like a dream, there existed three hundred and ten documents, forming a confused medley, in which the evidence of one person was contradicted by that of another.