"At half-past seven, eh?"
"Half-past seven at latest, Monsieur le Président."
"And why your liberty?"
"To catch the murderer of Cosmo Mornington, of Inspector Vérot, and of the Roussel family."
"Are you the only one that can catch him?"
"Yes."
"Still, the police are moving. The wires are at work. The murderer will not leave France. He shan't escape us."
"You can't find him."
"Yes, we can."
"In that case he will kill Florence Levasseur. She will be the scoundrel's seventh victim. And it will be your doing."