Great old movie. For those who have never seen it, rush out and rent a copy.
Without giving away too much, Robert Redford works for the CIA, but only as a researcher. His job is to read everything he can get his hands on, scouring books almost at random in search of any tidbits that might be somehow useful or relevant to the work of the CIA.
One day he steps out for coffee, and the CIA office where he works explodes, killing everyone there. Then he finds that he is being hunted by people who wish to make it a clean sweep. He has no "field" experience as a spy, but his decades of reading books gives him a lot of practical knowledge of all sorts of things, and he uses this to 1) evade being killed, 2) investigate who is after him and why, and 3) attempt to win out over them.
Lots of fun. Sample quote: Higgins: "Oh, you... you poor dumb son of a bitch. You've done more harm than you'll ever know." Turner: "I hope so..."
Another couple of fun "spooks on the loose" movies are "Sneakers" (again with Robert Redford) and "Hopscotch" (with the wonderful Walter Matthau).
"Sneakers" is the story of a bunch of talented misfits (including Redford as a retired government agent) working as a freelance security company. They are hired to obtain something from a hotel room, which they do, only to find that it is something so valuable that, as one line in the movie puts it, "there's not a government on the planet that wouldn't kill everyone in this room for this box..." Sample quote: "You know I could have been in the NSA, but they found out my parents were married."
"Hopscotch" is the delightful tale of an elderly CIA agent (Walter Matthau) who is insultingly demoted to a desk job by a snotty new manager (Ned Beatty). Disgusted, Matthau decides to retire and write a "tell-all" book about the agency's screwups. He disappears, and Beatty and Matthau's former co-workers go looking for him to try to stop him. The old fox (Matthau) proves too slippery for them and makes fools of them at every turn. Glenda Jackson is also great as his old girlfriend. Fun quote: Kendig: "Yours was gin and ginger ale, right?" Isobel von Schonenberg: "Mine was NEVER gin and ginger ale. Montrochet '69, right next to the beer."