three in the
morning
His distress was so obvious that she let the subject drop . That night she lay awake as she had fallen into the habit of doing . But instead of purposeless , rambling thoughts , she was trying definitely to plan a search for work . Toward three in the morning she heard him tossing and muttering -- for the wall between their rooms was merely plastered laths covered with paper . She tried his door ; it was locked . She knocked , got no answer but incoherent ravings . She roused the office , and the night porter forced the door .