Bring your thinking cap, because the first 1/4 of the film is dense with story & character make up. The writing kept me at the edge of intelligence, which is a rarity, and the characters are enjoyable to follow in the unpredictable story line. The suspence sequences had my heart racing, as well as the action scenes. If you look at Tony Gilroy's credits, writing and directing, you'll have an idea of what to expect. My take, he's a smart film maker. In short the film is a great ride from beginning to end.