The Good Shepherd (2006) is a historical drama starring Matt Damon, Angelina Jolie, Robert De Niro, and Alec Baldwin. The film traces the early years of U.S. intelligence through the eyes of one man whose dedication to his country comes at a personal cost. With an intricate storyline, strong performances, and a focus on loyalty, sacrifice, and secrecy, the movie offers a powerful look at the birth of modern intelligence services.