4 a.m.
he inquired . She did not answer his question , but as she ran on again she lowered her voice : -- `` You 've been in his office to-day ? '' `` He gave me some more circulars , '' Don admitted . `` Then you 'd better believe he knew you did n't get to bed last night until 4 a.m. And you 'd better believe he has tucked that away in his mind somewhere . '' Don appeared worried . `` He did n't say anything . '' `` No , he did n't say anything .