With the release of a trailer earlier tonight, you can check out over 30 images from next week's "Worlds Finest" episode of Supergirl, which will feature the Girl of Steel (Melissa Benoist) teaming-up with The Flash (Grant Gustin).
Kara gains a new ally when The Flash arrives from an alternate universe and helps her fight the Silver Banshee and Livewire in exchange for her helping him return home.
The episode will also introduce Dr. Amelia Hamilton, presumably related to longtime Superman supporting cast member (and S.T.A.R. Labs Scientist) Emil Hamilton from the comics.
You can check out the gallery below.
Supergirl airs Mondays at 8 p.m. ET/PT on CBS.