Kara investigates a secretive new group whose leader, Thomas Coville, has a mysterious connection to Supergirl. Meanwhile, Samantha feels like she's letting Ruby down, and J'onn confesses an old secret.
Quest roles:
Floriana Lima(Maggie Sawyer), Carl Lumbly(Myr'nn J'onzz), Erica Durance(Alura Zor-El), Anjali Jay(Selena), Emma Tremblay(Ruby Arias), Sage Brocklebank(Guard), David Carzell(Kenneth), Nick Fontaine(Josh), Cameron Forbes(Chief), Meghan Gardiner(Soccer Mom), Khaira Ledeyo(Vice Principal), Alex Zahara(Little Kryptonian Man), Sofia Vassilieva(Olivia), Chad Lowe(Thomas Coville), Hyuma Frankowski(Jeremy)