Lupin stopped, with a shout. Isilda had suddenly escaped from the men guarding her, made a grab at him and taken to flight, carrying the book with her.
"Oh, the little mischief! Quick, you! . . . Go round by the stairs below. I'll run after her by the passage."
But she had slammed the door behind her and bolted it. He had to go down and run along the buildings with the others, looking for a staircase which would take them to the first floor.
The fourth house was the only one open. He went upstairs. But the passage was empty and he had to knock at doors, force locks and make his way into unoccupied rooms, while Waldemar, showing as much ardor in the pursuit as himself, pricked the curtains and hangings with the point of his sword.
A voice called out from the ground-floor, towards the right wing. They rushed in that direction. It was one of the officers' wives, who beckoned to them at the end of a passage and told them that the girl must be in her lodging.
"How do you know?" asked Lupin.
"I wanted to go to my room. The door was shut and I could not get in."
Lupin tried and found the door locked:
"The window!" he cried. "There must be a window!"
He went outside, took the count's sword and smashed the panes. Then, helped up by two men, he hung on to the wall, passed his arm through the broken glass, turned the latch and stumbled into the room.