midnight
The figure moved rapidly along the west wall of the Inn almost the entire length of the building , until it arrived at the entrance of the bowling-alley which abutted from the old northern wing . Reaching this it paused for a moment , glancing about ; then inserted a key , fumbled for a moment with the latch , opened the door , and disappeared within . Tom was perplexed . He could not be sure that it was the Marquis ; but whether it were or not , he knew that there was no reason for any one entering the old portion of the Inn at midnight . His first thought was to go down alone and investigate ; his second was to waken Dan . He lowered the window gently , drew the curtains across it , and bending over his friend , shook him gently by the shoulder . `` Dan , Dan , I say ; wake up ! ''