CHAPTER XXIV.
THE DUEL IN THE TOWER.

The detective stood closely against the door when he rapped upon it, and the moment it started to swing open in response to the summons he applied his strength against it so that it was flung inward with a force which nearly upset Count Jean de Cadillac, who appeared on the other side. And with the same gesture Nick forced himself across the threshold, followed instantly, of course, by Antoine Lafetre, who sought to close it again as quickly as possible.

But quick as he was, he was not soon enough to prevent the count from giving the signal of alarm, which Lafetre well knew would be heard by one or more of the guards, and which in a short time would bring a horde of men thundering at the door in their chief’s defense.

In that first pressure against the door when he partly opened it, Cadillac had recognized the presence of an enemy; it is doubtful if he did not at that instant also recognize Nick Carter; and even while he staggered back from the force of the blow which the weight of the door delivered against him, he placed a silver whistle to his lips and blew upon it.

But that was all. The door was closed and locked on the inside by Antoine, who withdrew the key, and then stood with his back against it, awaiting orders; and he was as entirely calm as the detective himself.

As Nick stepped into the center of the room and turned to confront the count, Bessie Harlan sprang, with a glad cry, from the embrasure of one of the windows, and almost threw herself into his arms. But she recoiled before she quite reached him, and shrank backward again with her hands to her eyes, for Cadillac had drawn a revolver from his pocket and was in the very act of aiming it at Nick Carter’s heart.

He was prevented from firing, however, for a gleam of steel shot through the air, and a light, quick blow descended upon the count’s wrist, knocking the weapon from his grasp to the floor, and Antoine said quietly:

“If monsieur le comte attempts to recover his weapon, I will spit him upon this rapier.”