For one instant the duke, in his rage, was tempted to draw his sword, make a furious charge upon the intruding canaille, and disperse them "vi et armis"-- but a second thought stayed his hand, as he realized that the killing or wounding of two or three of these miserable actors would not further his suit; and besides, he could not stain his noble hands with such vile blood as theirs.

So he put force upon himself and restrained his rage, and, bowing with icy politeness to Isabelle, who, trembling in every limb, had edged nearer to her friends, he made his way out of the room; turning, however, at the threshold to say, with peculiar emphasis, "Au revoir, mademoiselle!"-- a very simple phrase certainly, but replete with significance of a very terrible and threatening nature from the way in which it was spoken.

His face was so expressive of evil passions as he said it that Isabelle shuddered, and felt a violent spasm of fear pass over her, even though the presence of her companions guaranteed her against any further attempts at violence just then.

She felt the mortal anguish of the fated dove, above which the cruel kite is circling swiftly in the air, drawing nearer with every rapid round.
The Duke of Vallombreuse regained his carriage, which awaited him in the court followed by the obsequious landlord, with much superfluous and aggravating ceremony that he would gladly have dispensed with, and the next minute the rumble of wheels indicated to Isabelle that her dangerous visitor had taken his departure.
Now, to explain the timely interruption that came so opportunely to rescue Isabelle from her enemy's clutches.

The arrival of the duke in his superb carriage at the hotel in the Rue Dauphine had caused an excitement and flutter throughout the whole establishment, which soon reached the ears of the tyrant, who, like Isabelle, was busy learning his new part in the seclusion of his own room.