The book follows Lucas Corso, a book detective who is hired to authenticate a rare manuscript by Alexandre Dumas. As he delves into the investigation, he finds himself entangled in a mystery involving two other books: a rare edition of "The Three Musketeers" and a satanic text, "The Book of Nine Doors of the Kingdom of Shadows". The narrative becomes a complex puzzle as Corso uncovers connections between the books, while also dealing with a seductive woman who seems to have stepped out of a Dumas novel, a mysterious killer, and a group of bibliophiles obsessed with Dumas. The lines between fiction and reality blur as he gets closer to the truth.

"The Pigeon" is a psychological drama about a man whose life is turned upside down by the presence of a pigeon in front of his apartment. The man, a meticulous and orderly bank security guard, has his life thrown into chaos when he encounters the bird, which triggers an existential crisis within him. The book explores themes of fear, isolation, and the fragility of human existence, as the protagonist grapples with his sudden and irrational fear of the pigeon.

"The Perfect Nanny" by Leïla Slimani is a psychological thriller that explores the relationship between a wealthy Parisian family and their nanny, Louise. The novel begins with the murder of the two children in the family by Louise, who had been their caregiver for several years. The story then delves into the events leading up to the tragic incident, revealing the complex dynamics between the family and Louise. Slimani's novel is a chilling portrayal of the blurred lines between love and obsession, and the dangers that can arise when those lines are crossed.

Set in pre-revolutionary France, the novel follows a young engineer who is tasked with demolishing an overflowing cemetery in Paris. As he undertakes this macabre task, he encounters a variety of characters, including a rebellious nun, a gravedigger, and a family living on the cemetery grounds. The book explores themes of mortality, the inevitability of progress, and the fragility of existence, all set against the backdrop of a society on the brink of dramatic change.