Ten minutes after, he saw her leave the room again, and lock it twice.
Boxtel, who saw all this whilst hiding himself on the landing-place of the staircase above, descended step by step from his story as Rosa descended from hers; so that, when she touched with her light foot the lowest step of the staircase, Boxtel touched with a still lighter hand the lock of Rosa's chamber.
And in that hand, it must be understood, he held the false key which opened Rosa's door as easily as did the real one.
And this is why, in the beginning of the chapter, we said that the poor young people were in great need of the protection of God..