Foucault's Pendulum

In 'Foucault's Pendulum', Umberto Eco tells the story of three friends, Jacobo Belbo, Casaubon, and Diotallevi, who work at a vanity press in Milan.

They invent a fictional conspiracy theory called 'The Plan' as a game, but it soon spirals out of control when real conspiracy theorists begin to take their creation seriously.

The novel explores themes of conspiracy theories, history, and secret societies, and it critiques the futility of such theories.

The story is narrated by Casaubon, who reflects on the tragic consequences of their game and the blurring of reality and fiction.

The novel is structured around the ten Sefiroth and is rich in esoteric references to Kabbalah, alchemy, and historical events.