Who is Salt?
I'll tell you who she is: She's Bourne on Heels.
Angelina Jolie is Evelyn Salt and she is a spy on the run after her loyalties are put into question. Is she working for the CIA or a Russian sleeper agent? The film makes it a guessing game until late in the movie to show where Salt's loyalties lie. But to keep things interesting, we'll see our heroine in exciting chase scenes and stunts that will make Tom Cruise (the action star originally tapped to play Salt) weep.
Despite the taut action and intrigue, Salt is a case of diminishing returns: the longer you watch the movie, the less you'll like it. There's a pretty good chance you'll feel the absurdity of the story as you go along, especially once it gets drawn out into an unsatisfying ending.
Angelina Jolie solidifies her place in the Hollywood action pantheon with her gripping portrayal as the eponymous heroine. After Wanted and Mr. and Mrs. Smith, add Salt to her exciting body of work.