New Promo For Supergirl Season 3, Episode 4 – The Faithful


Kara (Melissa Benoist) investigates a secretive new group whose leader, Thomas Coville (guest star Chad Lowe), has a mysterious connection to Supergirl. Meanwhile, Samantha (Odette Annable) feels like she’s letting Ruby (guest star Emma Tremblay) down, and J’onn (David Harewood) confesses an old secret.

Supergirl Season 3, Episode 4 – The Faithful premieres on CW 10/30/17

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