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 group of anarchists and their plot to carry out a terrorist attack. The novel explores themes of espionage, political extremism, and the moral ambiguity of its characters. With its dark and atmospheric portrayal of a society on the brink of change, The Secret Agent is a notable fin-de-siècle work.