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This weekend, comic book uber fans are descending upon San Diego for Comic-Con International — they'll be dressed in elaborate costumes, and get selfies with generations of characters from "The Star Trek" series.
Melissa Locker, culture correspondent for Time, The Guardian, and The Takeaway, discusses the hot topics and events at this year's Comic-Con, which include the Harry Potter spin-off "Fantastic Beasts," the new "Justice League" film, and a glimpse at Season 7 of "The Walking Dead."