In a few weeks the new Steven Spielberg-Tom Cruise movie, Minority Report, will be warning us of a Futureworld in which criminals are arrested before they commit their crimes. (Seems to some, of course, that we're already living there.) All praise, then, to this spunky little SF thriller that does the same work, on a tighter budget and smaller scale, based on a story written by the same author, Philip K Dick, in 1953 at the height of the McCarthy era. If Blade Runner or AI occasionally springs to mind, be charitable and forget it. This is the economy-pack Dystopia.