World's Finest

Series 1 - Episode 18 World's Finest

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Summary

In a special crossover episode, Kara gains a valuable new ally when the Flash's attempts to increase his speed catapult him into her universe. He helps her take on Silver Banshee and Live Wire in return for her assistance in finding a way for him to return home. Guest starring Grant Gustin.

Cast & Crew

Kara Danvers/Supergirl Melissa Benoist
James Olsen Mehcad Brooks
Winslow `Winn' Schott Jeremy Jordan
Lucy Lane Jenna Dewan-Tatum
Non Chris Vance
Siobhan Smythe/Silver Banshee Italia Ricci
Leslie Willis/Livewire Brit Morgan
Barry Allen/The Flash Grant Gustin
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Drama