Supergirl

Season 3, Episode 19

Episode Title: The Fanatical

Air Date: 2018-05-21

Overview:

When Tanya, a disciple of Coville's, escapes from what's left of his cult, she gives Kara and James a journal that could hold the key to saving Sam. Someone learns Guardian's identity and threatens to expose James if he doesn't do what they ask. James contemplates what it means to be a black vigilante without a mask in America.