Every few years, Luc Besson revisits a favourite theme, that of the female-as-assassin. La Femme Nikita, Leon / The Professional as examples. Here (Besson's co-screenwriter and producer) those two films are spliced together. And that's about it. Cue a series of kills and reprisal kills until the inevitable showdown.
Having someone as decent an actor and as visually striking as Saldana play a psychotic doesn't excuse the barrenness of thought here; thinking about the movie soon makes it a queasy experience. That may be a bit heavy for what's presumably intended as a bit of action fluff, but it's all there in the subtext. A weird movie, and pretty unpleasant if you ponder it for a moment, and no amount of glossy cinematography, duff plotting and insufficient costuming for the lead will get over the bad taste at the centre of Colombiana. Not Europa Corp's finest moment.