Eleanor's adventure begins when she inadvertently mistakes the carriage waiting at the coach stop for one sent by her prospective employer, Mrs. Macclesfield. She finds herself carried to the estate of one Ned Carlyon, whom Eleanor mistakes for Mr. Macclesfield. Carlyon, meanwhile, believes Eleanor to be the young woman he hired to marry his dying cousin, Eustace Cheviot, in order to avoid inheriting Cheviot's estate himself. Somehow, Eleanor is talked into marrying Eustace on his deathbed and thus becomes a wealthy widow almost as soon as the ring is on her finger. What starts out as a simple business arrangement soon becomes much more complicated as housebreakers, uninvited guests, a shocking murder, missing government papers, and a dog named Bouncer all contribute to this lively, frequently hilarious tale of mistaken identities, foreign espionage, and unexpected love set during the Napoleonic Wars