When her brother is suspected in the disappearance of a government memorandum, does the intrepid Lady Pamela Frayne turn to her worthy fiancé for support? No, she sets off by herself for Whiston Castle and enlists Carlin, a coachman who seems to be a gentleman fallen on hard times, to help her. Can Lady Pamela escape detection as a lady's maid while the coachmen masquerades as a Scottish lord while they search for the missing paper?