Supergirl (2015– )
31 user 8 critic


When a shocking revelation brings chaos to National City, Supergirl sets out to capture Mercy Graves.


Harry Jierjian


Jerry Siegel (based on characters created by), Joe Shuster (based on characters created by) | 11 more credits »




Episode cast overview, first billed only:
Melissa Benoist ... Kara Danvers / Supergirl / Kara Zor-El
Mehcad Brooks ... James Olsen
Chyler Leigh ... Alex Danvers
Katie McGrath ... Lena Luthor
Jesse Rath ... Querl Dox / Brainiac-5
Sam Witwer ... Agent Liberty
Nicole Maines ... Nia Nal
David Harewood ... J'onn J'onzz
Lynda Carter ... President Olivia Marsdin
Bruce Boxleitner ... President Baker
Rhona Mitra ... Mercy Graves
Robert Baker ... Otis Graves
Andrea Brooks ... Eve Teschmacher
Anthony Konechny ... Raymond Jensen
Fulvio Cecere ... Massimo


When a shocking revelation brings chaos to National City, Supergirl sets out to capture Mercy Graves.

Plot Summary | Add Synopsis


TV-PG | See all certifications »






Release Date:

21 October 2018 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:




Aspect Ratio:

16:9 HD
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Did You Know?


President Marsdin mentions that, as a literal alien, her presidency is violation of the Article 2 of the Constitution. As outlined in said article, the three prerequisites to hold office are that one must be:
  • A natural-born citizen
  • At least 35 years old, and
  • An inhabitant of the United States for at least fourteen years.
See more »


There is no way Mercy should have been able to hack Brainy's image inducer, as it's an advanced piece of technology from the 31st century, which he began using before L-Corp reverse-engineered it. Even assuming Brainy's inducer evolved from Lena's design, that in itself creates a bootstrap paradox: as a result of being brought back in time, it becomes the source of its own creation, and how it originally existed so that he could bring it back in time can't be determined. See more »


Alex Danvers: Otis slipped up. When he was talking about Mercy, he referred to "those two." So she's working with another person, we gotta figure out who it is.
Kara Danvers: Maybe it's someone she knew at LuthorCorp.
[collecting her purse]
Kara Danvers: I'm heading to Lena's now. I'll try to find out.
See more »


Written by Derek Pitts
Performed by Derek Pitts and the Bullets
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User Reviews

Very Important lessons and an amazing episode!!
22 October 2018 | by arrow-24591See all my reviews

This episode is probably one of my favorite Supergirl episodes. It was an amazing episode and it taught so many very important lessons for me. Don't listen to those people who say it was a political lecture it wasn't at all. It was about how even if people are different they are still human and you need to accept them for who they really are.

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