ten o'clock at night
A servant entered with a card . `` The lady , sir , begs to see the General at once , if only for five minutes . '' The General frowned as he took the card . What lady would be calling at ten o'clock at night and demanding interviews when he was so much occupied . But his face changed as he read , then glanced up at his chief-of-staff . `` This is remarkable , Strain . The lady superior of the gray sister 's convent .