#Watch Supergirl Online: Season 6 Episode 19

On Supergirl Season 6 Episode 19, Lex and Nyxly’s nefarious plan threatened the existence of all the superheroes.

Meanwhile, Alex prepared for her wedding while simultaneously trying to make sense of what happened to everyone else.

Elsewhere, Nia and Brainy finally explained their feelings for each other.

What happened?

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.