Wonderful sci-fi thriller that managed to slip past me for too many years. An interesting story with interesting little details that keep you locked in...and keep you guessing. Some exciting camerawork as well. Performances are good throughout with "the Major" being a standout. The friendship between the two male leads, Davidson and Lancaster, is a little off. Lancaster is more than a bit of an ass, but maybe I can chalk that up to the time and place the film was made. Sure, the main premise is old fashioned sci-fi nonsense, but if you've stumbled onto this film...you came here knowing what to expect. Recommended.