Watch Supergirl Online: Season 5 Episode 19Paul Dailly at .
Did Supergirl manage to stop Lex and Leviathan?
Supergirl Season 5 Episode 19 was all about trust, as the girl of steel was forced to work with someone she never thought she would trust again -- Lena.
Meanwhile, Nia kept dreaming about Brainy, and tried to make sense of what the dreams were trying to tell her.
Elsewhere, Brainy realized there was only one way to stop Lex, but it became clear not everyone was going to survive the final battle.
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Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.