Supergirl Season 3 Episode 13
Overview
The DEO captures a second Worldkiller, Purity. Supergirl and Alex use very different methods of interrogation with Purity in the hopes of finding out how to defeat Reign. However, Purity escapes and attacks the city’s subway tunnels. Meanwhile, J’onn, Winn and Mon-El band together to fix the Legion ship.
Director: Jesse Warn
Guest Star: Amy Jackson, Andrew Nadanyi, Anjali Jay, Emma Tremblay, Herbert Duncanson, Krys Marshall