midnight
` Tai n't often he 's had a chance to meet up with a real haunted house , eh , Chatz ? '' and Red gave the Southern boy a sly dig in the ribs . `` Never had that pleasure in all my life , fellows , I assure you , '' replied the Southern boy , with ill-concealed delight in his manner . `` But say , no respectable ghost was ever known to walk except at midnight , and we do n't intend camping out at the old mill , do we , just because of this silly talk ? '' asked George . `` Oh , the rest of us do n't , but Chatz might take a notion to stay over , '' laughed Red . `` When a fellow is set on investigating things he do n't understand , and which were never meant for us to understand , there 's just no telling how far he will carry the game . ''