Following two successful collaborations in the Jason Bourne series, Matt Damon and Bourne Ultimatum director Paul Greengrass are making another spy film together. This one's likely to be a bit more serious than their action-packed Bourne movies, though. Green Zone will be set in the eponymous walled city within Baghdad where the U.S. forces make their home. According to Variety, Damon plays an American military officer who teams up with a senior CIA agent (The Matador's Greg Kinnear) to search for evidence of weapons of mass destruction. "Amy Ryan (Gone Baby Gone) will play a New York Times foreign correspondent sent to Iraq to investigate the U.S. government's WMD claims." The trade says the movie is "inspired by Rajiv Chandrasekaran's nonfiction book Imperial Life in the Emerald City: Inside Iraq's Green Zone. Greengrass and [screenwriter] Brian Helgeland turned the premise into a fictional thriller set in the Green Zone."