8.7/103,786 votesLoading...#1 - Crisis on Earth-X (I)
Season 3 Episode 8 - Aired 11/27/2017
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: N/A
8.6/103,496 votesLoading...#2 - Falling
Season 1 Episode 16 - Aired 3/14/2016
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
Writer: Robert Rovner, Jessica Queller
8.6/104,344 votesLoading...#3 - Worlds Finest
Season 1 Episode 18 - Aired 3/28/2016
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: N/A
8.6/102,077 votesLoading...#4 - It's a Super Life
Season 5 Episode 13 - Aired 2/23/2020
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: N/A
8.5/102,193 votesLoading...#5 - Reign
Season 3 Episode 9 - Aired 12/4/2017
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
Writer: Paula Yoo, Caitlin Parrish
8.4/102,503 votesLoading...#6 - Elseworlds (III)
Season 4 Episode 9 - Aired 12/11/2018
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: N/A
8.4/103,536 votesLoading...#7 - Crisis on Infinite Earths: Part One (I)
Season 5 Episode 9 - Aired 12/8/2019
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: N/A
8.3/101,542 votesLoading...#8 - The House of L
Season 4 Episode 16 - Aired 3/24/2019
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: N/A
Writer: Eric Carrasco, Dana Horgan
8.2/103,291 votesLoading...#9 - The Adventures of Supergirl
Season 2 Episode 1 - Aired 10/10/2016
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: N/A
8.2/101,381 votesLoading...#10 - The Quest for Peace
Season 4 Episode 22 - Aired 5/19/2019
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: N/A
8.1/102,249 votesLoading...#11 - Midvale
Season 3 Episode 6 - Aired 11/13/2017
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
Writer: Caitlin Parrish, Jess Kardos
8.1/101,479 votesLoading...#12 - O Brother, Where Art Thou?
Season 4 Episode 15 - Aired 3/17/2019
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
Writer: Derek Simon, Nicki Holcomb
8.1/101,316 votesLoading...#13 - Red Dawn
Season 4 Episode 21 - Aired 5/12/2019
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: N/A
8.0/102,711 votesLoading...#14 - Manhunter
Season 1 Episode 17 - Aired 3/21/2016
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: N/A
8.0/102,535 votesLoading...#15 - The Last Children of Krypton
Season 2 Episode 2 - Aired 10/17/2016
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
Writer: Robert Rovner, Caitlin Parrish
7.9/103,190 votesLoading...#16 - Human for a Day
Season 1 Episode 7 - Aired 12/7/2015
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
Writer: Ted Sullivan, Yahlin Chang
7.9/103,090 votesLoading...#17 - Hostile Takeover
Season 1 Episode 8 - Aired 12/14/2015
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
Writer: Roberto Aguirre-Sacasa, Caitlin Parrish
7.9/102,811 votesLoading...#18 - Strange Visitor from Another Planet
Season 1 Episode 11 - Aired 1/25/2016
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
Writer: Michael Grassi, Caitlin Parrish
7.9/102,787 votesLoading...#19 - Medusa (I)
Season 2 Episode 8 - Aired 11/28/2016
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
Writer: Jessica Queller, Derek Simon
7.9/102,228 votesLoading...#20 - Exodus
Season 2 Episode 15 - Aired 3/6/2017
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
Writer: Paula Yoo, Eric Carrasco
7.9/102,195 votesLoading...#21 - Nevertheless, She Persisted
Season 2 Episode 22 - Aired 5/22/2017
Supergirl challenges Rhea to battle to save National City. Meanwhile, Superman returns and Cat Grant offers Supergirl some sage advice.
Director: Glen Winter
Writer: N/A
7.8/102,837 votesLoading...#22 - For The Girl Who Has Everything
Season 1 Episode 13 - Aired 2/8/2016
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: N/A
7.8/102,259 votesLoading...#23 - Luthors
Season 2 Episode 12 - Aired 2/13/2017
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
Writer: Cindy Lichtman, Robert Rovner
7.8/101,551 votesLoading...#24 - Tremors
Season 5 Episode 7 - Aired 11/17/2019
Supergirl finally learns the truth about Lena while tangling with Leviathan. J'onn J'onn makes a discovery about his brother's whereabouts.
Director: Andi Armaganian
Writer: Katie Rose Rogers, J. Holtham
7.7/102,747 votesLoading...#25 - Better Angels
Season 1 Episode 20 - Aired 4/18/2016
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: N/A
The Best Episodes of Supergirl
Every episode of Supergirl ranked from best to worst. Let's dive into the Best Episodes of Supergirl!
Twenty-four-year-old Kara Zor-El, who was taken in by the Danvers family when she was 13 after being sent away from Krypton, must learn to embrace...
Genres:DramaSci-Fi & FantasyAction & Adventure
Top Episode Ratings Summary
"Crisis on Earth-X (I)" is the best rated episode of "Supergirl". It scored 8.7/10 based on 3786 votes. Directed by Larry Teng and written by N/A, it aired on 11/27/2017. This episode scored 0.1 points higher than the second highest rated, "Falling".