nine o'clock
_ '' Guy de Lissac had hardly taken two steps toward Marianne before she had vanished behind the heavy folds of the Japanese portière that fell in its place behind her . He opened the door . Mademoiselle Kayser was already in the hall , with her hand on the handle of the door . `` At nine o'clock I shall be with you , '' she said to Lissac as she disappeared . She waved a salutation , the valet de chambre hastened to open the door , and her outline , that for a moment stood out in the light of the staircase , vanished . Guy was almost angry , and returned to his room . Now that she had left , he opened his window quickly .