Supergirl S03E13 - Both Sides Now

Episode Overview

The DEO apprehends another Worldkiller known as Purity. Supergirl and Alex take contrasting approaches to interrogate her, aiming to uncover a way to stop Reign. However, Purity manages to break free and launches an assault on the subway tunnels in the city. Meanwhile, J’onn, Winn, and Mon-El join forces to repair the Legion ship.

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