Watch Supergirl Online: Season 1 Episode 20

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How did it all end?

On Supergirl Season 1 Episode 20, the superhero had to go against her sister in order to try and stop Non and the Myriad from brining an end to the human race.

Kara had to try and save Jon after he was attacked by Alex, but did he manage to pull through?

Also, our heroine was forced to confront her feelings for James when it looked like their life was ending. 

Use the video above to watch Supergirl online to get up to speed with all the drama... before it says goodbye for the summer.

Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.

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Supergirl Season 1 Episode 20 Quotes

Alex: Don't you have someplace better to be, like at Lord Tech? Helping your employees get through what just happened?
Max: That's what corporate shrinks on retainer are for.

I'm sorry if I kissed you when you weren't in control of yourself, because I am all about consent.