Impostor takes place in the year 2079. An evil race of Alpha Centauris have been attacking Earth for over 25 years now and we have been able to put bubbles around our cities to keep them out. Yet the battle continues, and Spencer John Olham (Gary Sinise) has created a defense that promises to help wipe them out. On the day he is to show his device to the Chancellor, the ruler of the surviving nations, he is taken into custody by the ESA (Earth Safety Agency). He is suspected to be an alien adroid that has killed the real Spencer Olham and who's only plot is to explode and kill the chancellor. He is detained by Major Hathaway (Vincent D'Onofrio) who is convinced of his guilt. Spencer's only hope from a sure death is to prove that he is really not an alien android
The acting is okay in this film, which features Madeline Stowe in the role of Olham's wife. It is kind of sad to see Sinise, who shined so brightly in Forrest Gump take yet another cheesy sci-fi role like the one he had in Mission to Mars.
This movie pretty much follows your typical science fiction plot line except for the dramatic conclusion, which still seems like a great episode of the Twilight Zone or Outer Limits. Most audiences will not fall for this stuff. The audience that will love this movie is the sci-fi guys, the people who are really into science fiction futuristic thrillers. Other than that, this film is best left for Cable or video rental at best.