Northanger Abbey
Isabella joyfully tells Catherine of her engagement to Catherine's brother, James Morland.  Later, John Thorpe proposes to Catherine, but she does not realise he is asking her to marry him. Later, when Isabella tells her that John is in love with her, she is really surprised and says no immediately. Then Eleanor Tilney invites Catherine to Northanger Abbey. Catherine there learns that the gothic novels are wrong, and that Northanger Abbey is a perfectly normal place, and is not haunted.