The CW's SUPERGIRL, LEGENDS OF TOMORROW, RIVERDALE New Seasons & New BLACK LIGHTNING Trailers

DC's Legends of Tomorrow
Credit: The CW

The CW's comic book shows are practically holding Comic-Con hostage on Saturday. Here are trailers for the upcoming new seasons of Supergirl, DC's Legends of Tomorrow, Riverdale and a new Black Lightning 'Where Heroes Are Born' trailer. 

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