midnight
`` I am Sister Celeste , '' came the immediate low reply . `` Are you the white man I guided ? '' `` Ay , '' I answered , rejoicing at this rare good fortune , `` and I beg you to listen to what I say . There will be a boat awaiting us beneath the old Agency building at midnight . You must be there with De Croix . '' `` De Croix ? '' `` Yes ; I know not if that be his name to you , but I mean the Frenchman whose life you saved .