The two men waited with utmost interest to see what was going to happen.
Sergeant Doucet reached the top of the embankment at last and hurried past the navvies, who stopped their work to stare inquisitively after the representative of authority. Fifty yards beyond them, François Paul, wrapped in thought, was walking slowly down towards the station of Verrières. Hearing the sound of steps behind him, he turned. When he saw the sergeant he frowned. He glanced rapidly about him and saw that while he was alone with the gendarme, so that no one could overhear what they said, however loudly they might speak, they were yet in such a position that every sign and movement they made would be perfectly visible to whoever might watch them. And as the gendarme paused a few paces from him and—remarkable fact—seemed to be on the point of bringing his hand to his cap in salute, the mysterious tramp rapped out:
"I thought I said no one was to disturb me, sergeant?"
The sergeant took a pace forward.
"I beg your pardon, Inspector, but I have important news for you."
For this François Paul, whom the sergeant thus respectfully addressed as Inspector, was no other than an officer of the secret police who had been sent down to Beaulieu the day before from head-quarters in Paris.
He was no ordinary officer. As if M. Havard had had an idea that the Langrune affair would prove to be puzzling and complicated, he had singled out the very best of his detectives, the most expert inspector of them all—Juve. It was Juve who for the last forty-eight hours had been prowling about the château of Beaulieu disguised as a tramp, and had had himself arrested with Bouzille that he might prosecute his own investigations without raising the slightest suspicion as to his real identity.
Juve made a face expressive of his vexation at the over-deferential attitude of the sergeant.
"Do pay attention!" he said low. "We are being watched. If I must go back with you, pretend to arrest me. Slip the handcuffs on me!"
"I beg your pardon, Inspector: I don't like to," the gendarme answered.