Dark Side of the Moon

"Dark Side of the Moon"
Information
Season 3 » Episode 20
Episode number	62 of 126
Original airdate	May 28, 2018
Written by	Derek Simon & Katie Rose Rogers
Directed by	Hanelle Culpepper
Guest stars
Erica Durance as Alura Zor-El Emma Tremblay as Ruby Arias Anjali Jay as Selena David Chisum as Ronald Collins Tim Russ as Jul-Us
Chronology
Preceded by	"The Fanatical"
Followed by	"Not Kansas"

"Dark Side of the Moon" is the twentieth episode of the third season of Supergirl, and the sixty-second episode overall. It aired on May 28, 2018.

Synopsis

Supergirl is stunned to discover that a part of Krypton survived. Meanwhile, Alex is attacked while out with Ruby, and Lena considers how far she will go to keep Reign contained.

Triva

• When Selena is given the vote to break the tie if Argo City shall help Earth, it is similar to when Jor-El is given the responsibility to break the tie to put Zod in the Phantom Zone.

• The little boy that Mon-El heals in Argo City is named Val. Though not directly related to Supergirl (2015) in and of itself, Kara's great-great grandfather, Val-El, appears in the series Krypton (2018).
• Argo City also appeared in Supergirl (1984), and is from where Kara arrived on Earth in search of the Omegahedron.
• When Winn mentions that he has 6 satellites monitoring when Supergirl and Mon  El, Winn mentions that he has radio dialed up to 11. Only after J'onn J'onzz mention certain things, Winn says 'Better crank that baby up to 12'. As to what that means, is a quote from the This Is Spinal Tap which was a 1984 American rock mockumentary.