Was John F. Kennedy assassinated because he was on the verge of telling the public the truth about UFOs? Dallas-area author and strangeness researcher Nick Redfern says, true or not, the belief is fairly widespread in the UFO investigation community. (He would know, Redfern has written 28 books on a wide variety of unsolved mysteries, including Monster Files, The Real Men in Black and Celebrity Secrets.) I asked Redfern to summarize the curious theory for us as JFK 50 approaches.

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