There was a Doctor Who episode that asked the question, what happens when a good man goes to war? There's a bunch of poetry folded in on that, but for the most part, if that good man is Jackie Chan, people die. Lots of them.
Chan plays a restaurant owner in London who, after watching his daughter die from a politically motivated bombing, decides to terrorize everyone responsible using a special set of skills. His main opposition is Pierce Brosnan, a former IRA bomber turned politician, who is trying to sweep the whole mess under the rug. A bunch of twists and turns later and we get a fairly well-done action political thriller that is filled with more grit than laughs.
I want to give Chan a hug. For decades, he was the action man that never played a villain and who attacked scores of baddies with ladders and stuff. Sometime in the last decade or so, though, the Hollywood machine has turned him into a great dramatic actor, first glimpsed as Mr. Miyagi in the Karate Kid remake that should not be spoken of. He shines in this role of the silent avenger working out his grief on people's faces.
A surprising movie, this one is a matinee or a rental if you have need for something in the Taken school of film.