nine o'clock at night
`` Yes , but in failing , '' said Malezieux , `` this plan put the regent on his guard . '' `` On the contrary , '' said Pompadour ; `` in consequence of that very failure , it will be supposed that we have abandoned it . '' `` And the proof is , '' said Valef , `` that the regent , on this head , takes fewer precautions than ever . For example -- since his daughter , Mademoiselle de Chartres , has become abbess of Chelles , he goes to see her every week , and he goes through the wood of Vincennes without guards , and with only a coachman and two lackeys , and that at eight or nine o'clock at night . '' `` And what day does he pay this visit ? '' asked Brigaud . `` Wednesday . ''