This novella, written in the form of an exchange of letters, portrays an amoral personality who would be termed a "psychopath" in modern jargon -- that is, someone who doesn't believe that any laws or rules of conduct apply to themselves. The recently-widowed Lady Susan Vernon is determined to make financially attractive marriages for both herself and her shy and intimidated teenaged daughter Frederica; Lady Susan wavers as to her course of action, but is always ready to lie and pretend to be inoffensive and humble, in order to get her way. Aside from its interest as a character study, Lady Susan is the only time that Jane Austen deals with the decadent London high society of the day (now loosely called "Regency").

Additional resources: Molland, Wikipedia

Letter I (1) - Lady Susan Vernon to Mr. Vernon - Lady Susan accepts her brother's invitation
Letter II (2) - Lady Susan Vernon to Mrs. Johnson - Lady Susan's winter plans
Letter III (3) - Mrs. Vernon to Lady De Courcy - Mrs. Vernon is concerned
Letter IV (4) - Mr. De Courcy to Mrs. Vernon - Mr. De Courcy shares some juicy gossip
Letter V (5) - Lady Susan Vernon to Mrs. Johnson - Lady Susan discusses her family
Letter VI (6) - Lady Susan Vernon to Mrs. Johnson - Mrs. Vernon tells her brother about her visitor
Letter VII (7) - Lady Susan Vernon to Mrs. Johnson - About Frederica
Letter VIII (8) - Mrs. Vernon to Lady De Courcy - Mrs. Vernon is vexed with her brother
Letter IX (9) - Mrs. Johnson to Lady S. Vernon - Mrs. Johnson gives Lady Susan romantic advice
Letter X (10) - Lady Susan Vernon to Mrs. Johnson - Lady Susan discusses her latest flirtation
Letter XI (11) - Mrs. Vernnon to Lady De Courcy - Mrs. Vernon is concerned
Letter XII (12) - Sir Reginald De Courcy to His Son - Papa speaks bluntly
Letter XIII (13) - Lady De Courcy to Mrs. Vernon - Mama is unhappy
Letter XIV (14) - Mr. De Courcy to Sir Reginald - Mr. De Courcy explains all
Letter XV (15) - Mrs. Vernon to Lady De Courcy - Mrs. Vernon is still concerned
Letter XVI (16) - Lady Susan to Mrs. Johnson - More about Frederica and flirting
Letter XVII (17) - Mrs. Vernon to Lady De Courcy - Mrs. Vernon has a different view of the young lady
Letter XVIII (18) - From the Same to the Same - Another budding romance?
Letter XIX (19) - Lady Susan to Mrs. Johnson - Lady Susan shows her maternal instincts
Letter XX (20) - Mrs. Vernon to Lady De Courcy - Mrs. Vernon shows her maternal instincts
Letter XXI (21) - Miss Vernon to Mr De Courcy - HALP!
Letter XXII (22) - Lady Susan to Mrs. Johnson - Lady Susan is vexed
Letter XXIII (23) - Mrs. Vernon to Lady De Courcy - Mrs. Vernon is more comfortable
Letter XXIV (24) - From the Same to the Same - Spoke too soon
Letter XXV (25) - Lady Susan to Mrs. Johnson - Lady Susan is triumphant!
Letter XXVI (26) - Mrs. Johnson to Lady Susan - Alicia extends an invitation, sort of
Letter XXVII (27) - Mrs. Vernon to Lady De Courcy - Mrs. Vernon is resigned
Letter XXVIII (28) - Mrs. Johnson to Lady Susan - Alicia's husband is plaguing her
Letter XXIX (29) - Lady Susan Vernon to Mrs. Johnson - Not to worry
Letter XXX (30) - Lady Susan Vernon to Mr. De Courcy - An inconvenient lover
Letter XXXI (31) - Lady Susan to Mrs. Johson - Plans for said inconvenient lover
Letter XXXII (32) - Mrs. Johnson to Lady Susan - He knows all!
Letter XXXIII (33) - Lady Susan to Mrs. Johnson - This eclaircissement is rather provoking
Letter XXXIV (34) - Mr. De Courcy to Lady Susan - Reginald Flounces
Letter XXXV (35) - Lady Susan to Mr. De Courcy - But I don't understand!
Letter XXXVI (36) - Mr. De Courcy to Lady Susan - Yes you do!
Letter XXXVII (37) - Lady Susan to Mr. De Courcy - Be that way!
Letter XXXVIII (38) - Mrs. Johnson to Lady Susan Vernon - Plenty of fish in the sea!
Letter XXXIX (39) - Lady Susan to Mrs. Johnson - See you later!
Letter XL (40) - Lady De Courcy to Mrs. Vernon - Charming news!
Letter XLI (41) - Mrs. Vernon to Lady De Courcy - Mrs. Vernon is relieved
Conclusion (42) - The denouement