Here's an illustration from a favorite movie that many people will remember. In Three Days of the Condor the central character, Turner (played by Robert Redford), works for a small research firm contracted by the CIA. One day he comes back from a lunch run to find that all his coworkers have been gunned down. He's left to figure out who has done this and why, all the while knowing that the bad guys, whoever they are, are looking for him.