three o'clock exactly
`` The Comtesse d'Origny lives at the other end of the Bois de Vincennes . Allowing that your husband finds a motor-cab , it is impossible for him to be back before a quarter-past three . Well , it is twenty-five to three now . I swear to take you away at three o'clock exactly and to take you to your son . But I will not go before I know everything . '' `` What am I to do ? '' she asked .