Supergirl (2015– )
7 user 10 critic

Worlds Finest 

Kara gains a new ally when the Flash arrives from a parallel universe and helps her fight the Silver Banshee and Livewire in exchange for helping him return home.


Nick Gomez


Jerry Siegel (based on characters created by), Joe Shuster (based on characters created by) | 7 more credits »





Episode cast overview, first billed only:
Melissa Benoist ... Kara Danvers / Supergirl
Mehcad Brooks ... James Olsen
Chyler Leigh ... Alex Danvers (credit only)
Jeremy Jordan ... Winn Schott
David Harewood ... Hank Henshaw (credit only)
Calista Flockhart ... Cat Grant
Grant Gustin ... Barry Allen / The Flash
Jenna Dewan ... Lucy Lane (as Jenna Dewan Tatum)
Chris Vance ... Non
Italia Ricci ... Siobhan Smythe / Silver Banshee
Brit Morgan ... Leslie Willis / Livewire
Harriet Sansom Harris ... Sinead
Jay Jackson ... News Anchor
Christopher Showerman ... Tor
Dawn Greenidge ... Pedestrian Woman


When former CatCo employee, Siobahn Smythe upset at how her life is going discovers something odd about herself. She then goes to a relative who tells her of their family's secret--that they were cursed by a banshee. Which comes out when one of them is angered. And she needs to destroy the object of their anger, in this case Cat, Kara and Supergirl. She tries to kill Kara but she is saved by a visitor from another universe, The Flash who was attempting to cross into another universe and ended up in hers. She reveals herself as Supergirl. they try to figure out how to get him back to his universe. Siobahn who now calls herself Silver Banshee makes another attempt but is captured by Supergirl. And she's taken to the DEO. and while there she meets Live wire. And later she escapes and frees Livewire and together they team up to go after Supergirl. Written by

Plot Summary | Add Synopsis


TV-14 | See all certifications »






Release Date:

28 March 2016 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:

Dolby Digital



Aspect Ratio:

16:9 HD
See full technical specs »

Did You Know?


Beyoncé is a singer according to Cat (Cat mentioned her performance on the Super Bowl). She is also a singer on "EARTH 1" where Barry Allen is from. However on The Flash 2x16 When she is mentioned as a singer, Jesse (from "EARTH-2") is confused and asks "Senator Knowles?" Meaning Beyoncé is a senator on Earth 2. See more »


[All goofs for this title are spoilers.] See more »


Kara Danvers: I have this villain. Her name is Livewire.
Barry Allen: Uh-huh.
Kara Danvers: And she's basically, like... like living electricity.
Barry Allen: Cool. We have a rogue like that. We call him Blackout. Which doesn't feel relevant all of a sudden.
See more »


References The Flash (2014) See more »


Performed by Transviolet
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User Reviews

28 March 2016 | by 2013venjixSee all my reviews

The episode was decent. The chemistry with Barry & Kara was fun & awkward at the same time. The villain team up, their...... Revenge Squad (based on the Superman Revenge Squad) was OK despite the fact That Cat Grant created 2 supervillains & not owning up to her mistakes. WHAT AN EGO! The problem thought-out this episode is continuity. The last Flash episode, "Trajectory" would have been a connection to this episode. the last five minutes would've shown Flash ran passed the Mach 3.3 mark & open a portal between alternate worlds (e.g. Supergirl universe).

Overall this episode was decent. It's NOT really worth the wait (besides Batman v Superman: Dawn of Justice WAS worth the wait). But it's decent.

Because of The Flash guest starring, I gave this episode a: "4" out of 10.

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