Supergirl › Season 3

S3 E13: Both Sides Now

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.

Air date	Feb 5, 2018
Runtime	42 minutes
TMDB rating	★ 7.3/10