about midnight
Wrayson , as soon as he was out of hearing , leaned over the table . `` It is on that night , '' he said to Duncan , `` that I come into touch with the affairs of which our friend has spoken . The man Barnes had a flat corresponding to mine on the floor above . I returned home about midnight and found a young lady , who was a complete stranger to me , engaged in searching my desk . I turned up the lights and demanded an explanation . She was apparently quite as much surprised to see me as I was to see her . It appeared that she had imagined herself in Barnes ' flat .