Ahead of American Ultra's arrival in UK cinemas, here's our pick of the 25 finest, sneakiest secret agents in film...
During the Cold War, the image of the secret agent as a well-groomed sophisticate in a suit proliferated all over the world, and even in the high-tech landscape of the 21st century, that image still stands - just look at such movies as Kingsman: The Secret Service, The Man From U.N.C.L.E. and, of course, the Bond franchise. But secret agents can come in many other guises, too, as the forthcoming American Ultra proves. In it, Jesse Eisenberg plays one of the most unlikely agents in cinema history: he's a scruffy, weed-smoking layabout who's initially unaware of his former status as a government operative.