six o'clock
`` Mr. McAllister , before you speak again , I think I may tell you that once before I have had to remind you that only to my most intimate friends am I known as Marie Gourdon . '' `` Am I not your friend ? I have known you all your life . '' `` I do not wish to continue that subject ; and pardon me , Mr. McAllister , if I seem rude , but it is now past six o'clock , and I must leave here in twenty minutes . It is a long drive into town , and I must be at the opera on time . '' `` I have something very important to say to you . My wife is dead . ''