The French novel Philosophy in the Bedroom maintains a darker tone than the more humorous and playful erotic novels published in the 18th century. The story follows a young girl, Eugenie, as she leaves her life of decency and is introduced to libertine philosophy. She thus becomes corrupted by her teachers and engages in countless lewd scenes, including sadomasochism. Following in the footsteps of her instructors, she turns to hedonism and refuses to return home to her morally conventional mother. The final section of the book will be surprised you.