Watch Supergirl Season 3 Episode 19 online via TV Fanatic with over 1 options to watch the Supergirl S3E19 full episode. Affiliates with free and paid streaming include Amazon.

Episode Details

On Supergirl Season 3 Episode 19, a former disciple of Coville’s gives Kara and James a journal that could hold the key to figuring out how to save Sam.

Rating: 2.9 / 5.0 (129 Votes)
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Supergirl Season 3 Episode 19 Quotes

For the past two years, I've had to be dishonest with her while she's been opening up to me. Lillian Luthor said it, and she was right. If Lena ever found out that I was Supergirl, she would be devastated, and she would lump me in with every other person in her life that's betrayed her.


I told you about Kryptonite. And I will tell you if I make it again, 'cause I agreed to that. But, with regards to other things I work on, this may come as a shock to you, but I don't think about you while I'm doing it.