hour after midnight
Then , after some hesitation , she added , `` I wonder if you would do me another favour . You could save my life , M'sieur Ewart -- if you only would . '' `` Well , if I can render you such a service , mademoiselle , I shall be only too delighted . As I told you the other day , my next journey is to Petersburg , and I may have to start any hour after midnight to-morrow . What can I do ? '' `` At present my plans are immature , '' she answered after a pause . `` But why not dine with me to-morrow night ?