What did Barry and Cisco have to ask for from Supergirl?
That was addressed on Supergirl Season 2 Episode 8 when the 4-part-crossover event kicked off.
Meanwhile on this hit CW drama, Winn and James contemplated telling Kara the truth about the Guardian, but how did Alex feel about it?
Also, Eliza came to town to celebrate Thanksgiving, but did aliens put a wrench in that plan?
Use the video above to watch Supergirl online to get caught up on the latest drama for the characters as they get ready to face off against aliens.
Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.