midnight
`` I beg pardon , '' he quietly finished . `` If it is Georgian , she must stand my friend . That is all I was going to say . If it is , against all reason and probability , her strangely restored twin , I shall leave this house by midnight , never probably to see any of you again . So you perceive that it is incumbent upon us to work promptly . Are you ready to hear what I have to propose ? '' `` Yes . ''