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: "The Girl With The Red Lightning" , focusing on Team Flash's battle against Cicada II.

: Season 5, Episode 21, "The Weight of the World," aired around the same era of peak network TV and is often cited in cross-show watching guides . Watch 24 - 5x21 1

: "The Opposite" , widely considered one of the show's best episodes. : "The Girl With The Red Lightning" ,