eight o’clock
You will go to see him about five o'clock , for I know that he will dine at home today at that time . Very good . By way of answer he must come to see me . If , three hours afterwards , by eight o'clock , he does not leave his house , all will be over . The Duchesse de Langeais will have vanished from the world . I shall not be dead , dear friend , no , but no human power will ever find me again on this earth . Come and dine with me ; I shall at least have one friend with me in the last agony .