The BEST Episodes of Supergirl

Every episode ever - ranked by fan votes!

Last Updated: Nov 4, 2019

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.

Worlds Finest

#1 - Worlds Finest

Season 1 - Episode 18

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 8.17
3,948 votes
Directors: Nick Gomez
Writers: Greg Berlanti, Andrew Kreisberg, Michael Grassi
Crisis on Earth-X (1)

#2 - Crisis on Earth-X (1)

Season 3 - Episode 8

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. Part 1 - Supergirl - S03E08 Part 2 - Arrow - S06E08 Part 3 - The Flash - S04E08 Part 4 - DC's Legends of Tomorrow - S03E08

star 8.06
3,298 votes
Directors: Larry Teng
Writers: Andrew Kreisberg, Marc Guggenheim, Robert Rovner, Jessica Queller
Nevertheless, She Persisted

#3 - Nevertheless, She Persisted

Season 2 - Episode 22

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

star 8.01
3,691 votes
Directors: Glen Winter
Writers: Andrew Kreisberg, Jessica Queller, Robert Rovner, Caitlin Parrish

#4 - Reign

Season 3 - Episode 9

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 7.98
2,284 votes
Directors: Glen Winter
Writers: Paula Yoo, Caitlin Parrish
Elseworlds (3)

#5 - Elseworlds (3)

Season 4 - Episode 9

Supergirl, The Flash, Green Arrow and Superman face the battle of their lives.

star 7.96
1,806 votes
Directors: Jesse Warn
Writers: Marc Guggenheim, Derek Simon, Robert Rovner

#6 - Falling

Season 1 - Episode 16

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 7.90
3,347 votes
Directors: Larry Teng
Writers: Robert Rovner, Jessica Queller
Better Angels

#7 - Better Angels

Season 1 - Episode 20

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 7.87
3,715 votes
Directors: Larry Teng
Writers: Andrew Kreisberg, Ali Adler, Robert Rovner, Jessica Queller
Welcome to Earth

#8 - Welcome to Earth

Season 2 - Episode 3

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 7.86
4,511 votes
Directors: Rachel Talalay
Writers: Jessica Queller, Derek Simon

#9 - Resist

Season 2 - Episode 21

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 7.84
3,662 votes
Writers: Jessica Queller, Derek Simon
The Adventures of Supergirl

#10 - The Adventures of Supergirl

Season 2 - Episode 1

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 7.83
5,003 votes
Directors: Glen Winter
Writers: Greg Berlanti, Andrew Kreisberg, Jessica Queller
The Last Children of Krypton

#11 - The Last Children of Krypton

Season 2 - Episode 2

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
4,579 votes
Directors: Glen Winter
Writers: Robert Rovner, Caitlin Parrish
Hostile Takeover

#12 - Hostile Takeover

Season 1 - Episode 8

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 7.81
3,368 votes
Directors: Karen Gaviola
Writers: Roberto Aguirre-Sacasa, Caitlin Parrish
The House of L

#13 - The House of L

Season 4 - Episode 16

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 7.79
1,165 votes
Directors: Carl Seaton
Writers: Dana Horgan, Eric Carrasco
All About Eve

#14 - All About Eve

Season 4 - Episode 17

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 7.79
1,134 votes
Directors: Ben Bray
Writers: Gabriel Llanas, Katie Rose Rogers, Brooke Pohl

#15 - Manhunter

Season 1 - Episode 17

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 7.79
3,331 votes
Directors: Chris Fisher
Writers: Derek Simon, Cindy Lichtman, Rachel Shukert
Battles Lost and Won

#16 - Battles Lost and Won

Season 3 - Episode 23

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

star 7.79
1,616 votes
Directors: Jesse Warn
Writers: Robert L. Rovner, Jessica Queller
O Brother, Where Art Thou?

#17 - O Brother, Where Art Thou?

Season 4 - Episode 15

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 7.79
1,170 votes
Writers: Derek Simon, Nicki Holcomb
The Quest for Peace

#18 - The Quest for Peace

Season 4 - Episode 22

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 7.78
1,081 votes
Directors: Jesse Warn
Writers: Robert L Rovner, Jessica Queller
Red Dawn

#19 - Red Dawn

Season 4 - Episode 21

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 7.77
1,013 votes
Medusa (1)

#20 - Medusa (1)

Season 2 - Episode 8

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. Part 1 - Supergirl - S02E08 Part 2 - The Flash - S03E08 Part 3 - Arrow - S05E08 Part 4 - DC's Legends of Tomorrow - S02E07

star 7.77
5,146 votes
Writers: Jessica Queller, Derek Simon

#21 - Survivors

Season 2 - Episode 4

When Kara and Alex investigate the murder of an unregistered alien, the trail leads to an alien fight club run by Roulette, the ringmaster who commands aliens to fight in mortal combat for the entertainment of rich humans. While trying to stop the fighting, Supergirl and Martian Manhunter find themselves up against a surprising opponent. Meanwhile, Hank is thrilled to have found another Martian and tries to get to know M'Gann better. Supergirl takes Mon-El under her wing and begins to train him.

star 7.77
4,095 votes
Writers: Paula Yoo, Eric Carrasco
Bunker Hill

#22 - Bunker Hill

Season 4 - Episode 8

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 7.76
1,238 votes
Directors: Kevin Smith
Writers: Rob Wright, Eric Carrasco
The Darkest Place

#23 - The Darkest Place

Season 2 - Episode 7

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 7.75
4,376 votes
Directors: Glen Winter
Writers: Robert Rovner, Paula Yoo
Girl of Steel

#24 - Girl of Steel

Season 3 - Episode 1

Kara deals with the loss of Mon-El by focusing all her energy on being Supergirl and the mysterious new threat against National City. Alex confesses a secret to Maggie about their impending nuptials. A citizen of National City has a mysterious connection to Kara, and Lena makes a bold move.

star 7.75
3,252 votes
Directors: Jesse Warn
Writers: Andrew Kreisberg, Robert Rovner, Caitlin Parrish

#25 - Exodus

Season 2 - Episode 15

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.

star 7.74
3,961 votes
Writers: Paula Yoo, Eric Carrasco