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

Show more on IMDbPro »

Technical Specs


Sound Mix:

Dolby Digital



Aspect Ratio:

16:9 HD
See full technical specs »

Did You Know?


1 of the 2 villains Italia Ricci aka silver banshee's last name is the same Siobhan Smythe as Grant Gustin's in Glee (2009) Sebastian Smythe. See more »


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


Supergirl: One mistake. That's all it took to just erase all the good I did before.
Winn Schott: You-you were poisoned. It's-it's not your fault.
Supergirl: People don't know that. All they know is that this symbol doesn't mean what it used to anymore.
See more »


References The Flash: Welcome to Earth-2 (2016) See more »


Performed by Transviolet
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User Reviews

"I thought I was the impossible"
28 March 2016 | by ThomasDrufkeSee all my reviews

Supergirl lost me a long time ago. It just wasn't the show for me. But I tuned in to this episode specifically because Grant Gustin was appearing as The Flash. The show's campy tone or cheesy and awkward dialogue hasn't changed at all, but I had some fun with this episode. If for anything else, hopefully this opens the door for more crossovers for any networks to comply with each other for a one-off.

If for anything else, this episode established the undeniable chemistry between Grant Gustin and Melissa Benoist. Benoist has always been the highlight of the show for me, and putting her alongside Gustin proved to be a great choice. There isn't a whole lot of explanation for why Barry Allen ends up in National City, except that he was just "working on his speed and ended up going through dimensions". But if you can get past that lack of explanation, I don't see how you couldn't have fun watching these two heroes fight together side by side.

The initial scene of Flash meeting "team Supergirl" with Wyn geeking out like Cisco on Flash or Kara in absolute awe of Barry's powers was funny, even if the jealousy of James got in the way. I don't really care for any of the side arcs currently going on including Lucy Lane apparently being in charge at the DEO? Or Wyn's girlfriend turned super-villain, Banshee? Or yet another superhero show doing the "city against hero" storyline. Or really anything involving Cat Grant, but I did enjoy every bit of the dynamic between Supergirl and Flash.

Overall, it was a basic superhero arc with the hero having to convince the city he/she isn't all that bad (wow that was a cheesy ending in the park), but hey Flash and Supergirl teamed up and that was cool. I'm not sure how many more times, if ever, we'll see these two together again, but I enjoyed my time.

+Chemistry between Benoist and Gustin

+Flash meeting team Supergirl

-Same old story arcs

-Idiotic people in the park need to stay away from super-villains


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