Aired
March 28, 2016
Supergirl
Supergirl
Worlds Finest #S01E18
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.
Episode 18 of Season 1 from Supergirl — available to stream in HD on any device.
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