Worlds Finest

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"Worlds Finest"
Supergirl episode
A promotional poster for the episode, inspired by the cover of Superman #199 (1967)
Episode no. Season 1
Episode 18
Directed by Nick Gomez
Story by Greg Berlanti
Teleplay by
Production code 4X7618
Original air date March 28, 2016 (2016-03-28)
Guest appearance(s)
Episode chronology
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"Worlds Finest" is the eighteenth episode in the first season of the CBS television series Supergirl, which aired on March 28, 2016. The episode's teleplay was written by Andrew Kreisberg and Michael Grassi, and directed by Nick Gomez.

The episode features a crossover appearance by the title character of the CW series The Flash (also developed and produced by Greg Berlanti and Kreisberg), marking the first episode of the series to feature a character from the Arrowverse, and the first character from a CW series to cross over to a CBS series before the show itself moved to the CW network. The episode loosely intersects with the events of The Flash season 2 episode "Versus Zoom".[1][2][3]

The episode reunites Melissa Benoist with her former Glee recurring co-star Grant Gustin, who portrays the Flash. The episode title was inspired by the World's Finest Comics series, in which Superman would team up with various other DC superheroes, including the Flash.


At the DEO, Siobhan Smythe is treated for her fall. The doctor cannot explain her new powers, but confirms she is still human. As she leaves, Siobhan overhears Leslie Willis a.k.a. Livewire being interrogated and starts seeing images of a banshee. The visions continue as she returns to CatCo, where Cat advises Kara about her relationship with James. Siobhan's hypersonic scream sends Kara flying out the window, but a dimensional breach opens and someone rushes out at a high speed and catches Kara, letting her down in a field.

The speedster introduces himself as Barry Allen, a.k.a. the Flash, a superhero from a parallel Earth, after Kara reveals herself as Supergirl, and Barry later learns her extraterrestrial origin. At CatCo, Barry meets Winn and James and explains the multiverse and how he reached their universe when testing a tachyon device fastened to his suit. Fascinated by each other's origins, Kara and Barry quickly become friends, and Kara offers to help Barry find a way home. Winn also befriends Barry attributable to his own fascination with parallel universes, but James is overawed by Barry's abilities. Cat calls the four into her office and demands they research the new superhero, rejecting Barry's idea to call him the Flash.

Siobhan's aunt Sinead tells her of a banshee's curse on their family. If wronged by others, Smythe women are possessed and develop a powerful wail that belongs to the spirit—to combat the curse, one must kill whoever wronged them. Siobhan concludes she must remove Supergirl to get Kara, unaware they are the same person, and frees Livewire. Cat refuses to go into hiding, so Kara asks for Barry's help and they pinpoint Livewire's location.

The Flash attacks Livewire with lightning, but this charges her powers. Supergirl tries to short out Livewire, but Siobhan, now calling herself Silver Banshee, screams and disorients her. The heroes retreat and Kara apologizes for going in without a plan. Barry recalls his similar experience with Roy Bivolo, advising her to practice patience. Barry develops ear buds to dampen Silver Banshee's scream based on those he used against Hartley Rathaway. Livewire and Silver Banshee kidnap Cat and demand the two heroes come to National City Park.

Livewire wreaks havoc before Supergirl and Flash arrive. Supergirl frees Cat before engaging Silver Banshee; Flash tackles Livewire, but she knocks him out. Livewire attacks a passing helicopter, but Supergirl takes the blow to protect the people below. The crowd surrounds her, and firefighters blast Livewire with water, causing her to lose control and shock Silver Banshee, defeating both. National City hails Supergirl as hero again. With Flash's help, the police develop a means of incarcerating metahuman criminals, imprisoning Livewire and Silver Banshee.

Cat reveals to Kara that she knew Barry was the Flash all along. At the field, Barry determines the kinetic energy from their combined running speed, with the tachyon device active, should create a breach back to his Earth. The two bid farewell before Barry enters the portal. Kara confesses her feelings to James, but he unemotionally walks out. Kara sees all the citizens acting similarly, marching in synchronicity. Non is revealed to be behind these events, as Myriad takes effect.



The episode attracted 651,000 viewers for its British premiere, making it the 8th most watched programme on Sky One for the week.[4]

Critical response

Grant Gustin received critical acclaim for his appearance as The Flash

Cliff Wheatley of IGN gave the episode an 8.6/10, stating "After the grim 'n' gritty Batman v Superman, Supergirl's "Worlds Finest" offered a fun, upbeat palette cleanser and one of the series' strongest episodes to date. Instead of the usual "beatdown" introduction, Supergirl and the Flash went straight to being superfriends, which was refreshing. Not only did Barry Allen fit perfectly in Kara's world, but actors Grant Gustin and Melissa Benoist had fantastic chemistry together onscreen. While the city's turnaround on Supergirl's Red K incident was a little sudden, overall, "Worlds Finest" was delightful."[5]

Caroline Siede of The A.V. Club gave the episode an A-, stating "My biggest fear going into “World’s Finest” was that the episode would be a fun one-off designed to convert Flash fans into Supergirl fans (and vice versa, I suppose) while ignoring the compelling narrative Supergirl has been exploring since Kara went bad in “Falling.” Instead “World’s Finest” relies heavily on Supergirl’s long-term storytelling, pulling together threads from the entire season into one jam-packed episode. And it does so while introducing the most enjoyable superhero team-up this side of The Avengers. For better or for worse, “World’s Finest” represents Supergirl in a nutshell: Fun, clunky, cheesy, and more intelligent than it seems at first glance."[6]


  1. ^ "Supergirl-Flash crossover: Everything you need to know, straight from set -". Entertainment Weekly's
  2. ^ Dominic Patten. "'Supergirl'-'Flash' Crossover: EP Andrew Kreisberg On How It Came Together - Deadline". Deadline.
  3. ^ Holmes, Adam (April 22, 2016). "Why Didn't The Flash Talk About The Supergirl Crossover At All?". CinemaBlend. Retrieved April 25, 2016.
  4. ^ "Weekly top 10 programmes". Retrieved September 29, 2018.
  5. ^ "SUPERGIRL: "Worlds Finest" REVIEW" from IGN (March 29, 2016)
  6. ^ "Supergirl and The Flash team-up for the dawn of inspiring superheroes " from The A.V. Club (March 28, 2016)

External links

  • "Worlds Finest" on IMDb
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