The Best Episodes of Supergirl

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8.8/10(3990 votes)
#1 - Crisis on Earth-X (I)
S3:E811/27/2017
Barry and Iris’s wedding brings the gang together, but things go awry when villains from Earth-X attack the ceremony. All of the superheroes band together with help from their super friends like Citizen Cold, The Ray, Felicity Smoak, Iris West and Alex Danvers to take on their most formidable villains yet. Earth’s mightiest heroes – Green Arrow, Supergirl, The Flash and White Canary – lead their teams into battle to save the world. The crossover continues on Arrow S06E08 Crisis on Earth-X (II), The Flash S04E08 Crisis on Earth-X (III) and DC's Legends of Tomorrow S03E08 Crisis on Earth-X (IV).
Director:Larry Teng
Writer:Unknown
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Director:Larry Teng
Writer:Unknown
8.7/10(4545 votes)
#2 - Worlds Finest
S1:E183/28/2016
Kara gains a new ally when the lightning-fast superhero The Flash suddenly appears from an alternate universe and helps Kara battle Siobhan, aka Silver Banshee, and Livewire in exchange for her help in finding a way to return him home.
Director:Nick Gomez
Writer:Unknown
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Director:Nick Gomez
Writer:Unknown
8.6/10(3676 votes)
#3 - Falling
S1:E163/14/2016
Kara turns on her friends and the citizens of National City after being exposed to Red Kryptonite makes her malicious and dangerous. Also, Cat appears on THE TALK to discuss Supergirl.
Director:Larry Teng
Writers:Jessica Queller, Robert Rovner
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Director:Larry Teng
Writers:Jessica Queller, Robert Rovner
8.6/10(2171 votes)
#4 - It's a Super Life
S5:E132/23/2020
Mxyzptlk returns with a proposition for Kara – what if she could go back in time and tell Lena her secret before Lex did, would things turn out different? Looking back over key moments throughout the series, Kara must decide if she wants to change history to become friends with Lena again.
Director:Jesse Warn
Writer:Unknown
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Director:Jesse Warn
Writer:Unknown
8.5/10(2303 votes)
#5 - Reign
S3:E912/4/2017
Supergirl investigates a mysterious symbol popping up all over National City, tracing its origins back to an ancient prophecy and the mark of the World Killer, Reign. Meanwhile, the tension between Lena and Morgan Edge continues to build, causing James to step in and offer up some protection, and possibly igniting a spark in the process.
Director:Glen Winter
Writers:Paula Yoo, Caitlin Parrish
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Director:Glen Winter
Writers:Paula Yoo, Caitlin Parrish
8.4/10(3713 votes)
#6 - Crisis on Infinite Earths: Part One (I)
S5:E912/8/2019
The Monitor sends Harbinger to gather the worlds’ greatest heroes - Supergirl, The Flash, Green Arrow, Batwoman, White Canary, The Atom and Superman - in preparation for the impending Crisis. With their worlds in imminent danger, the superheroes suit up for battle while J’onn and Alex recruit Lena to help them find a way to save the people of Earth-38. This crossover continues on Batwoman S1E09, The Flash S6E09, Arrow S8E08, and Legends of Tomorrow S05E01.
Director:Jesse Warn
Writer:Unknown
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Director:Jesse Warn
Writer:Unknown

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8.4/10(2662 votes)
#7 - Elseworlds (III)
S4:E912/11/2018
Supergirl, The Flash, Green Arrow and Superman engage in the battle of their lives. The crossover starts on The Flash S05E09 Elseworlds (I) and Arrow S07E09 Elseworlds (II).
Director:Jesse Warn
Writer:Unknown
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Director:Jesse Warn
Writer:Unknown
8.2/10(3451 votes)
#8 - The Adventures of Supergirl
S2:E110/10/2016
When a new threat emerges in National City, Kara/Supergirl teams up with her cousin, Clark Kent/Superman, to stop it. Kara is thrilled to have family in town but it leaves Alex feeling a bit left out. Meanwhile, Hank and Supergirl are stunned by the pod that came crashing to Earth.
Director:Glen Winter
Writer:Unknown
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Director:Glen Winter
Writer:Unknown
8.3/10(1643 votes)
#9 - The House of L
S4:E163/24/2019
In the wake of Lex Luthor's return, the show flashes back to what he's been doing for the last two years and how his secret machinations and plans have affected Supergirl and Lena.
Director:Unknown
Writers:Eric Carrasco, Dana Horgan
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Director:Unknown
Writers:Eric Carrasco, Dana Horgan
8.2/10(2374 votes)
#10 - Midvale
S3:E611/13/2017
Kara and Alex head home to Midvale for a little R&R. While there, Kara recalls a painful memory of a childhood friend's death and how that traumatic experience brought the Danver sisters closer together.
Director:Rob J. Greenlea
Writers:Caitlin Parrish, Jess Kardos
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Director:Rob J. Greenlea
Writers:Caitlin Parrish, Jess Kardos
8.1/10(1581 votes)
#11 - O Brother, Where Art Thou?
S4:E153/17/2019
Secretly furloughed from prison due to failing health, Lex Luthor visits his sister, Lena, to seek her help finding a cure. Savvy as ever, Lena is suspicious of Lex's motives but when she's faced with a life and death situation, she must decide how she truly feels about her brother. Meanwhile, Supergirl and J'onn face off against Manchester Black. James' sister Kelly comes to town.
Director:Tawnia McKiernan
Writers:Derek Simon, Nicki Holcomb
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Director:Tawnia McKiernan
Writers:Derek Simon, Nicki Holcomb
8.1/10(1485 votes)
#12 - The Quest for Peace
S4:E225/19/2019
Lex Luthor descends upon Washington, DC and summons Lena and Lillian Luthor to the White House. Supergirl realizes she has one last chance to stop Lex and turns to the power of the press to help her.
Director:Jesse Warn
Writer:Unknown
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Director:Jesse Warn
Writer:Unknown
8.0/10(2865 votes)
#13 - Manhunter
S1:E173/21/2016
J'onn J'onzz reveals the details of meeting Kara and Alex's father, Dr. Jeremiah Danvers, and assuming Hank Henshaw's identity. Also, Kara debates trusting someone new with her secret identity and Siobhan plots against Kara.
Director:Chris Fisher
Writer:Unknown
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Director:Chris Fisher
Writer:Unknown
8.0/10(2687 votes)
#14 - The Last Children of Krypton
S2:E210/17/2016
CADMUS attacks National City with a Kryptonite-powered villain who ends up seriously hurting Supergirl. Superman blames Hank because the Kryptonite was stolen from the DEO. Meanwhile, Kara’s first day at her new job doesn’t go as planned after she meets her new boss, Snapper Carr.
Director:Glen Winter
Writers:Caitlin Parrish, Robert Rovner
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Director:Glen Winter
Writers:Caitlin Parrish, Robert Rovner
8.0/10(1417 votes)
#15 - Red Dawn
S4:E215/12/2019
Kara comes face to face with Red Daughter and the two engage in an epic battle. Determined to find a way to extract the Harun-El, Lena turns to an unlikely source for help - Lillian Luthor. Meanwhile, Alex realizes she's missing parts of her memory, and Brainy, Nia and J'onn set out to track down aliens who have been abducted by Lex.
Director:Alexis Ostrander
Writer:Unknown
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Director:Alexis Ostrander
Writer:Unknown
7.9/10(3374 votes)
#16 - Human for a Day
S1:E712/7/2015
Kara and her friends must rely on their inner strength and courage when an earthquake strikes National City. Also, Alex’s mistrust of Hank reaches a breaking point when the earthquake traps them in the DEO with Jemm, a powerful alien escapee.
Director:Larry Teng
Writers:Yahlin Chang, Ted Sullivan
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Director:Larry Teng
Writers:Yahlin Chang, Ted Sullivan
7.9/10(3264 votes)
#17 - Hostile Takeover
S1:E812/14/2015
Kara goes toe-to-toe with Astra when her aunt challenges Kara’s beliefs about her mother. Also, Cat is threatened with being removed as the CEO of CatCo after a hacker exposes her private and damaging emails.
Director:Karen Gaviola
Writers:Caitlin Parrish, Roberto Aguirre-Sacasa
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Director:Karen Gaviola
Writers:Caitlin Parrish, Roberto Aguirre-Sacasa
7.9/10(2981 votes)
#18 - Strange Visitor from Another Planet
S1:E111/25/2016
Kara must help Hank face his painful past when a White Martian, a member of the alien race that wiped out his people, kidnaps Senator Miranda Crane, an anti-alien politician. Also, Cat's estranged son, Adam, arrives in National City.
Director:Glen Winter
Writers:Michael Grassi, Caitlin Parrish
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Director:Glen Winter
Writers:Michael Grassi, Caitlin Parrish
7.9/10(2925 votes)
#19 - Medusa (I)
S2:E811/28/2016
Eliza comes to town to celebrate Thanksgiving with her daughters. Alex decides it’s time to come out to her mother; Kara is shocked when Eliza suggests Mon-El has feelings for her, and Winn and James consider telling Kara the truth about the Guardian. Meanwhile, Cadmus unleashes a virus that instantly kills any alien in the vicinity so Kara enlists an unexpected ally – Lena Luthor. The epic superhero crossover kicks off tonight when Barry Allen and Cisco Ramon seek Kara's help with an alien invasion on their Earth. The crossover continues on The Flash S03E08 Invasion! (II), Arrow S05E08 Invasion! (III) and DC's Legends of Tomorrow S02E07 Invasion! (IV).
Director:Stefan Pleszczynski
Writers:Derek Simon, Jessica Queller
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Director:Stefan Pleszczynski
Writers:Derek Simon, Jessica Queller
7.9/10(2348 votes)
#20 - Exodus
S2:E153/6/2017
As Alex searches for Jeremiah and Kara investigates a series of alien kidnappings, the sisters realize they must break the rules to foil a new Cadmus plot. In an effort to get Snapper Carr to run a story that would help her stop Cadmus, Kara agrees to set up an interview between Snapper and Supergirl.
Director:Michael A. Allowitz
Writers:Paula Yoo, Eric Carrasco
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Director:Michael A. Allowitz
Writers:Paula Yoo, Eric Carrasco
7.9/10(2323 votes)
#21 - Nevertheless, She Persisted
S2:E225/22/2017
Supergirl challenges Rhea to battle to save National City. Meanwhile, Superman returns and Cat Grant offers Supergirl some sage advice.
Director:Glen Winter
Writer:Unknown
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Director:Glen Winter
Writer:Unknown
7.8/10(2998 votes)
#22 - For The Girl Who Has Everything
S1:E132/8/2016
Kara’s friends must find a way to save her life when a parasitic alien attaches itself to her and traps her in a dream world where her family is alive and her home planet was never destroyed. Also, Alex, Hank and the DEO must fend off a Kryptonian attack while Kara is out of commission.
Director:Dermott Downs
Writer:Unknown
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Director:Dermott Downs
Writer:Unknown
7.8/10(2382 votes)
#23 - Luthors
S2:E122/13/2017
After Metallo breaks out of prison and frees Lillian Luthor, the police blame Lena for his escape and arrest her. Despite overwhelming evidence, Kara refuses to believe her friend is guilty and fights to clear Lena’s name. Flashbacks reveal how Lena came to be a Luthor.
Director:Tawnia McKiernan
Writers:Cindy Lichtman, Robert Rovner
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Director:Tawnia McKiernan
Writers:Cindy Lichtman, Robert Rovner
7.7/10(2902 votes)
#24 - Better Angels
S1:E204/18/2016
Supergirl is forced to do battle with an unexpected foe and must risk everything – including her life – to prevent Non and Indigo from destroying every person on the planet.
Director:Larry Teng
Writer:Unknown
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Director:Larry Teng
Writer:Unknown
7.7/10(2596 votes)
#25 - Welcome to Earth
S2:E310/24/2016
An attack is made on the President as hot-button, alien vs. human rights issues heat up in National City. Supergirl and the DEO are assigned to protect the President and bring in the responsible party. Alex teams up with Detective Maggie Sawyer to investigate the case while Kara searches for a recently escaped Mon-El, who she fears may be the alien behind the assault.
Director:Rachel Talalay
Writers:Derek Simon, Jessica Queller
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Director:Rachel Talalay
Writers:Derek Simon, Jessica Queller