A clever idea - an thriller played along real time to involve the viewer directly in the tension and pressure of the deadlines. Depp is forced to kill a senator or his daughter will be killed by Walken and Maffia. He is given a gun and a time limit to carry it out.
As the basis for a thriller it doesn't quite work - the real time concept falls apart a few times, but with this much talent on board it still holds it own. A throwback to the Hitchcock everyman thrillers of years ago, Depp plays his character well and you always believe he is just an ordinary man in an unbelievable situation rather than an action hero in the making while Walken does what he does best and plays the villain well.
The plot holds together well and you really find stuff out at the same time as Depp does. Some of the conspiracy stuff towards the end of the film is obvious and doesn't add anything to the film, but the main story revolving around Depp and Walken is tense enough to carry the film.
It doesn't contain any explosions or martial arts but the tension is good throughout. It's not a classic thriller but it's quite an original idea and plot and almost manages to keep the tension for the whole movie.