midnight
`` It 's a riddle , then ? '' `` For the moment only ... . But I will say this : it will be futile , your attempting to escape Paris ; Popinot has already picketted every outlet . Your one hope resides in me ; and I shall be at home to you until midnight to-morrow -- to-day , rather . '' Impressed in spite of himself , Lanyard stared . But the Count maintained an imperturbable manner , looking straight ahead . Such calm assurance would hardly be sheer bluff .