midnight
`` You , Mr. Blake ! How can that be possible ? '' `` I spoiled a serenade for you a few nights ago . I was officer of the day , and caught sight of a man gazing up at your window after midnight . I felt sure he was going to sing : so , like a good fellow , I ran over to play an accompaniment , and then -- would you believe it ? -- he would n't sing , after all . '' She was white now .