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.
Jesse Warn directed the episode written by Paula Yoo & Katie Rose Rogers.
Series: Supergirl Season 3 Episode 4
Air Date: Monday, October 30, 2017
Time Slot: 8:00 PM-9:00 PM EST on The CW