Watch Supergirl Season 3 Episode 9 online via TV Fanatic with over 1 options to watch the Supergirl S3E9 full episode. Affiliates with free and paid streaming include Amazon.

Episode Details

On Supergirl Season 3 Episode 9, a mysterious symbol tracing back to an ancient prophecy of the World Killer, Reign, pops up all over National City.

Rating: 4.3 / 5.0 (120 Votes)
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Supergirl Season 3 Episode 9 Quotes

Winn: You probably don't know what Star Wars is.
J'onn: Excuse me? The Empire Strikes Back is the best movie sequel of all time.
Winn: I mean I just love you more and more each day.

Kara: Okay, come and get your egg nog!
Alex: Uh, yeah, but be warned, this is not your grandmother's recipe. Oh, this is highly potent, intoxicating deliciousness.