Originally published in 1908, The Man Who Was Thursday: A Nightmare is a thrilling blend of mystery, satire, and philosophical exploration. The novel follows Gabriel Syme, a poet-turned-detective, who infiltrates a secret anarchist council in London. As Syme unravels the identities of his fellow conspirators, he is drawn into a surreal and suspenseful chase that questions the nature of order and chaos. Chesterton’s masterful storytelling makes this a timeless and thought-provoking classic.