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Supergirl S01E18

Watch Online Supergirl: Season 1 Episode 18 (S01E18) Stream Air Date: 28/03/2016

Worlds Finest

Plot: Kara gains a new ally when the lightning-fast superhero The Flash suddenly appears from an alternate universe and helps Kara battle Siobhan, aka Silver Banshee, and Livewire in exchange for her help in finding a way to return him home.

Watch Online Stream for Free Full Episode TV Show Supergirl S01E18