The document provides summaries for four films: The Third Man, Dirty Harry, Source Code, and In the Line of Fire. The Third Man summary describes the plot where a pulp novelist arrives in postwar Vienna and discovers his friend has died, meeting odd people at the funeral who question his friend's character. Dirty Harry introduces Clint Eastwood's iconic role as a tough cop who uses a powerful handgun to foil crimes. Source Code describes a soldier who enters the body of an unknown man and discovers he's part of a government experiment to find a bomber by reliving a train incident. In the Line of Fire features Clint Eastwood as a Secret Service agent haunted by failing to save JFK, now trying to stop