Essentially, it's the story of weekend scientists who build a time machine in a suburban garage. [...] fans of true speculative fiction as opposed to slam-bang sci-fi action such as "The X-Men" will find "Primer" utterly intriguing, Undoubtedly, repeat viewings will reveal more details, making this a good candidate for limited theatrical release in specialty venues. Working with amateur actors in 40 locations in Dallas over five weeks, first-time writer-director-star Shane Carruth displays abundant talent in this Sundance dramatic competition entry.

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