Add Yahoo as a preferred source to see more of our stories on Google. The official logline poses the film's central question: "If you found out we weren't alone—if someone showed you, proved it to you—would that frighten you? This summer, the truth ...

The film arrives at a time when our collective obsession with aliens has reached a fever pitch: The Trump administration has made a big show of releasing a trove of government files related to the UFO phenomenon.