Watch Supergirl Online: Season 1 Episode 17

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What happened between Jon and Kara's father?

On Supergirl Season 1 Episode 17, this dad came clean about a meeting that could change the way Kara and Alex think about their father forever.

Elsewhere, Kara decided that she would confide in someone new about her big superhero secret. Who was it, and how did Alex feel about this?

While this was going on, Siobhan continued to bring a plan into place that would ruin Kara's life forever. 

What was the plan? Did Kara shut her up for good?

Use the video above to watch Supergirl online to get up to date.

Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.

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Supergirl Season 1 Episode 17 Quotes

Winn: Do you think Supergirl's lost the public's trust for good?
Cat: I suppose if Mel Gibson can present at the Golden Globes, then Supergirl can win the city back.

I know you're feeling betrayed and alone, but if you go along with Jim Harper just to feel like you fit in, to feel like you belong somewhere, ultimately, the only person you're betraying is yourself.