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Supergirl: 1x18

Worlds Finest

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.

Mar. 28, 2016
Supergirl: 1×18
Supergirl: 1×18
Supergirl: 1×18
Supergirl: 1×18
Supergirl: 1×18
Supergirl: 1×18
Supergirl: 1×18
Supergirl: 1×18
Supergirl: 1×18
Supergirl: 1×18