new arrow verse crossover promo highlights alien invasion, olivers crisis and some super introductions /

With The CW’s Supergirl/The Flash/Arrow/Legends of Tomorrow crossover event kicking off this Monday at 8/7c,here’s a super original promo to feast on this Thanksgiving Eve. Fresh footage hints at A.
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S.’ familiarity with the Dominators who will swoop in from outer space to prevent the human scourge,” as well as shows Kara’s reaction to the […]

Source: tvline.com