The BEST Episodes of Supergirl

Every episode ever - ranked by fan votes!

Last Updated: Jan 9, 2022

Network: The CW

As Superman’s cousin, Kara Danvers, also known as Supergirl, balances her work as a reporter for CatCo Worldwide Media with her work for the Department of Extra-Normal Operations, a super-secret government organization whose mission is to keep National City – and the Earth – safe from sinister threats.

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Worlds Finest

#1 - Worlds Finest

Season 1 - Episode 18 - Aired Mar 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.

star 8.09
4,422 votes
Directors: Nick Gomez
Writers: Andrew Kreisberg, Greg Berlanti, Michael Grassi
Crisis on Earth-X (1)

#2 - Crisis on Earth-X (1)

Season 3 - Episode 8 - Aired Nov 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.

star 8.04
3,643 votes
Directors: Larry Teng
Writers: Andrew Kreisberg, Jessica Queller, Marc Guggenheim, Robert L. Rovner
Crisis on Infinite Earths (1)

#3 - Crisis on Infinite Earths (1)

Season 5 - Episode 9 - Aired Dec 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. J’onn and Alex recruit Lena to help them find a way to save the people of Earth-38. Part 1 - Supergirl - S05E09 "Crisis on Infinite Earths: Part 1" Part 2 - Batwoman - S01E09 "Crisis on Infinite Earths: Part 2" Part 3 - The Flash - S06E09 "Crisis on Infinite Earths: Part 3" Part 4 - Arrow - S08E08 "Crisis on Infinite Earths: Part 4" Part 5 - DC's Legends of Tomorrow - S05E01 "Crisis on Infinite Earths: Part 5"

star 7.93
1,656 votes
Directors: Jesse Warn
Writers: Derek Simon, Marc Guggenheim, Robert L. Rovner

#4 - Reign

Season 3 - Episode 9 - Aired Dec 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.

star 7.93
2,566 votes
Directors: Glen Winter
Writers: Caitlin Parrish, Paula Yoo
Nevertheless, She Persisted

#5 - Nevertheless, She Persisted

Season 2 - Episode 22 - Aired May 22, 2017

Supergirl challenges Rhea to battle to save National City. Meanwhile, Superman returns and Cat Grant offers Supergirl some sage advice.

star 7.90
3,974 votes
Directors: Glen Winter
Writers: Andrew Kreisberg, Caitlin Parrish, Jessica Queller, Robert L. Rovner
Elseworlds (3)

#6 - Elseworlds (3)

Season 4 - Episode 9 - Aired Dec 11, 2018

Supergirl, The Flash, Green Arrow and Superman face the battle of their lives. Part 1 - The Flash - S05E09 "Elseworlds, Part 1" Part 2 - Arrow - S07E09 "Elseworlds, Part 2" Part 3 - Supergirl - S04E09 "Elseworlds, Part 3"

star 7.90
2,100 votes
Directors: Jesse Warn
Writers: Derek Simon, Marc Guggenheim, Robert L. Rovner

#7 - Falling

Season 1 - Episode 16 - Aired Mar 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.

star 7.89
3,757 votes
Directors: Larry Teng
Writers: Jessica Queller, Robert L. Rovner
Better Angels

#8 - Better Angels

Season 1 - Episode 20 - Aired Apr 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.

star 7.84
4,100 votes
Directors: Larry Teng
Writers: Ali Adler, Andrew Kreisberg, Jessica Queller, Robert L. Rovner
The Last Children of Krypton

#9 - The Last Children of Krypton

Season 2 - Episode 2 - Aired Oct 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.

star 7.83
5,026 votes
Directors: Glen Winter
Writers: Caitlin Parrish, Robert L. Rovner
Welcome to Earth

#10 - Welcome to Earth

Season 2 - Episode 3 - Aired Oct 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.

star 7.82
4,919 votes
Directors: Rachel Talalay
Writers: Derek Simon, Jessica Queller

#11 - Resist

Season 2 - Episode 21 - Aired May 15, 2017

The Daxamites launch a full invasion of National City, killing and arresting civilians. They also attack the DEO, but Alex and Winn manage to escape. Mon-El learns that he has to marry Lena in order to unite the people of Earth with Daxam.

star 7.81
3,840 votes
Writers: Derek Simon, Jessica Queller
The Adventures of Supergirl

#12 - The Adventures of Supergirl

Season 2 - Episode 1 - Aired Oct 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.

star 7.80
5,522 votes
Directors: Glen Winter
Writers: Andrew Kreisberg, Greg Berlanti, Jessica Queller
Hostile Takeover

#13 - Hostile Takeover

Season 1 - Episode 8 - Aired Dec 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.

star 7.78
3,918 votes
Directors: Karen Gaviola
Writers: Caitlin Parrish, Roberto Aguirre-Sacasa
The Quest for Peace

#14 - The Quest for Peace

Season 4 - Episode 22 - Aired May 19, 2019

Lex Luthor descends upon Washington, D.C. 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.

star 7.76
1,323 votes
Directors: Jesse Warn
Writers: Derek Simon, Jessica Queller, Rob Wright, Robert L. Rovner

#15 - Manhunter

Season 1 - Episode 17 - Aired Mar 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.

star 7.75
3,701 votes
Directors: Chris Fisher
Writers: Cindy Lichtman, Derek Simon, Rachel Shukert
Bunker Hill

#16 - Bunker Hill

Season 4 - Episode 8 - Aired Dec 2, 2018

Nia has a powerful dream about Agent Liberty but refuses to look at it as a prophetic dream, Kara and Brainy try to persuade Nia to embrace her destiny, and Manchester Black pays Ben Lockwood a menacing visit.

star 7.74
1,457 votes
Directors: Kevin Smith
Writers: Eric Carrasco, Rob Wright
Battles Lost and Won

#17 - Battles Lost and Won

Season 3 - Episode 23 - Aired Jun 18, 2018

Supergirl and team take on Serena in an epic battle for Earth.

star 7.74
1,828 votes
Directors: Jesse Warn
Writers: Jessica Queller, Robert L. Rovner
O Brother, Where Art Thou?

#18 - O Brother, Where Art Thou?

Season 4 - Episode 15 - Aired Mar 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.

star 7.74
1,431 votes
Writers: Derek Simon, Nicki Holcomb
The House of L

#19 - The House of L

Season 4 - Episode 16 - Aired Mar 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.

star 7.73
1,415 votes
Directors: Carl Seaton
Writers: Dana Horgan, Eric Carrasco

#20 - Alex

Season 2 - Episode 19 - Aired May 1, 2017

Alex is kidnapped and the kidnapper threatens to kill her unless Supergirl releases a notorious criminal from prison. Supergirl and Maggie have always had different approaches to apprehending criminals but this time they must work together to save Alex. Meanwhile, Rhea has an interesting proposal for Lena.

star 7.73
4,002 votes
Directors: Rob Greenlea
Writers: Eric Carrasco, Greg Baldwin
Medusa (1)

#21 - Medusa (1)

Season 2 - Episode 8 - Aired Nov 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. Barry Allen and Cisco Ramon seek Kara’s help with an alien invasion on their Earth. Part 1 - Supergirl - S02E08 "Medusa" Part 2 - The Flash - S03E08 "Invasion!" Part 3 - Arrow - S05E08 "Invasion!" Part 4 - DC's Legends of Tomorrow - S02E07 "Invasion!"

star 7.73
5,490 votes
Writers: Derek Simon, Jessica Queller
The Darkest Place

#22 - The Darkest Place

Season 2 - Episode 7 - Aired Nov 21, 2016

While Guardian tries to clear his name after being accused of a murder committed by another vigilante, Supergirl heads out on a solo mission to rescue Mon-El who has been captured by CADMUS. While fighting to free Mon-El, Supergirl comes face to face with Cyborg Superman.

star 7.73
4,764 votes
Directors: Glen Winter
Writers: Paula Yoo, Robert L. Rovner
Red Dawn

#23 - Red Dawn

Season 4 - Episode 21 - Aired May 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.

star 7.73
1,273 votes
Writers: Eric Carrasco, Gabriel Llanas, Lindsay Sturman
City of Lost Children

#24 - City of Lost Children

Season 2 - Episode 20 - Aired May 8, 2017

The DEO investigates a Phorian woman who uses her telekinetic powers to cause rampage. James tracks down her son, Marcus, who refuses to speak with anyone but James, who spends time bonding with him. With Rhea's encouragement, Lena completes the matter transporter, which Rhea activates, causing Marcus to nearly destroy the office with his powers.

star 7.72
3,798 votes
Directors: Ben Bray
Writers: Anna Musky-Goldwyn, Gabriel Llanas, Robert L. Rovner
All About Eve

#25 - All About Eve

Season 4 - Episode 17 - Aired Mar 31, 2019

Supergirl must deal with the destructive aftermath of Lex's nefarious plans. Shocked at what Lex has created, Supergirl faces her biggest challenge yet.

star 7.72
1,391 votes
Directors: Ben Bray
Writers: Brooke Pohl, Gabriel Llanas, Katie Rose Rogers