Watch Supergirl Online: Season 4 Episode 17

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What did Lex do next?

On Supergirl Season 4 Episode 17, Kara realized that she had to get rid of her clone if she was going to have any success at taking down Lex Luthor. 

However, Lex put another nefarious plan in motion, and it put Kara against one of her own. 

Meanwhile, things took a turn for James when it emerged that his condition was far worse than he first anticipated. 

How did his sister avenge the shooting?

On a Mission - Tall  - Supergirl Season 4 Episode 15

Also, Alex got closer to someone in the DEO. 

Use the video above to watch Supergirl online right here via TV Fanatic. 

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

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Supergirl Season 4 Episode 17 Quotes

Lillian Luthor: I know you're upset Lex outsmarted you. He hurt your poor little heart.
Lena Luthor: Well, at least I have a heart.
Lillian Luthor: An overrated organ. Romanticized by poets and frivolous women.

I do see red sometimes, and it's not an ego thing or allegiance, or anything like that. I feel the weight of the world on my shoulders. And since Superman left, and Lex has been free, it feels a lot heavier. If my enemies are strengthened, if I'm weakened in the slightest, I could lose. And I just can't ... I can't lose.

Supergirl