Storyboard glimpse from the upcoming Arrow / The Flash two-part crossover episode, via Marc Guggenheim.     The Flash: “Legends of Today” — (8:00-9:01:00 p.m. ET) (Content Rating TBD) (HDTV) PART ONE OF THE EPIC CROSSOVER WITH “ARROW” — In its second major crossover event with “Arrow,” Vandal Savage (guest star Casper Crump) arrives in Central City and sets … Continue reading Arrow/Flash Crossover Storyboard Glimpse