The Secret Agent is a novel by Joseph Conrad, published in 1907. Set in London during the late 19th century, it tells the story of a spy, Adolf Verloc, who is tasked with carrying out a terrorist act. The novel explores themes of political intrigue, espionage, and the destructive nature of radical ideologies. With its dark and atmospheric portrayal of a corrupt society, The Secret Agent is a notable work in the Decadence & the Fin-de-Siècle genre.