Supergirl gains a lightning-fast ally next week when The Flash (Grant Gustin) arrives from an alternate universe to help Kara battle Siobhan, aka Silver Banshee, and Livewire in exchange for her help in finding a way to return him home.
The highly-anticipated crossover episode between CBS’ Supergirl and The CW’s The Flash happens on Monday, March 28 (8PM ET/PT) on CBS.
Check out the promo, and because they’re totally adorable here’s every promotional photo of Kara and Barry together from next week’s episode, “Worlds Finest”:
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