midnight
Daddy Jacques did go , however , and , in the dim light of the room , saw nothing . `` Mademoiselle Stangerson must have lived some anxious moments while Daddy Jacques was absent ; but I think she was not aware that so many evidences had been left . After she had been attacked she had only time to hide the traces of the man 's fingers on her neck and to hurry to the laboratory . Had she known of the bone , the cap , and the handkerchief , she would have made away with them after she had gone back to her chamber at midnight . She did not see them , and undressed by the uncertain glimmer of the night light . She went to bed , worn-out by anxiety and fear -- a fear that had made her remain in the laboratory as late as possible . `` My reasoning had thus brought me to the second phase of the tragedy , when Mademoiselle Stangerson was alone in the room .