midnight
Oh , the whole thing is impossible ! Think of it , Mr. Calhoun . Where could that girl have gone ? Alone , at midnight , in that gorgeous gown , no hat or wrap -- '' `` How do you know that ? '' `` I do n't -- not positively . But if she had put on wraps and gone out by either door she would surely have been seen by some one in the house . I 'm just sure she did n't go out by the front street door , for we in the living-room must have noticed her .