The Best Episodes of Supergirl

As Superman’s cousin, Kara Danvers (aka Supergirl) balances her work as a reporter for CatCo Worldwide Media with her work for the Department of Extra-Normal Operations (DEO), 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
3,728 votes
Directors: Nick Gomez
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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.

star 8.11
2,518 votes
Directors: Larry Teng
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Reign

#3 - 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 8.06
1,584 votes
Directors: Glen Winter
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Nevertheless, She Persisted

#4 - 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 8.03
3,396 votes
Directors: Glen Winter
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Falling

#5 - 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
3,137 votes
Directors: Larry Teng
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Welcome to Earth

#6 - 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 7.87
4,285 votes
Directors: Rachel Talalay
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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
3,516 votes
Directors: Larry Teng
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Resist

#8 - 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 7.86
3,390 votes
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The Adventures of Supergirl

#9 - 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
4,753 votes
Directors: Glen Winter
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The Last Children of Krypton

#10 - 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
4,345 votes
Directors: Glen Winter
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Hostile Takeover

#11 - 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
3,151 votes
Directors: Karen Gaviola
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Girl of Steel

#12 - 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 7.78
2,735 votes
Directors: Jesse Warn
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Survivors

#13 - 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 7.78
3,848 votes
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Manhunter

#14 - 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 7.78
3,146 votes
Directors: Chris Fisher
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Medusa (1)

#15 - 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 7.78
4,874 votes
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The Darkest Place

#16 - 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 7.77
4,120 votes
Directors: Glen Winter
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Far from the Tree

#17 - Far from the Tree

Season 3 - Episode 3

Eliza throws Alex and Maggie a wedding shower, which causes Maggie to reach out to her estranged father. Supergirl joins J’onn on a personal mission.

star 7.76
2,236 votes
Directors: Dermott Downs
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Exodus

#18 - 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 7.76
3,712 votes
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City of Lost Children

#19 - City of Lost Children

Season 2 - Episode 20

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 7.76
3,305 votes
Directors: Ben Bray
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Wake Up

#20 - Wake Up

Season 3 - Episode 7

When Winn and the team discover an alien ship has crash landed deep underwater beneath National City, Kara/Supergirl is called in to investigate. Meanwhile, Hank attempts to bond with his father, Myr’nn. Samantha, eager for some understanding of the changes she has been experiencing, looks to her estranged mother, Patricia Arias, for answers.

star 7.76
1,778 votes
Directors: Chad Lowe
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Changing

#21 - Changing

Season 2 - Episode 6

The Guardian debuts to lend a hand after a parasite alien drains Supergirl of her power. Mon-El considers a less than desirable new career which then leads him to contemplate his motives. Alex struggles with a new reality.

star 7.75
4,176 votes
Directors: Larry Teng
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The Faithful

#22 - The Faithful

Season 3 - Episode 4

Kara investigates a secretive new group whose leader, Thomas Coville, has a mysterious connection to Supergirl. Meanwhile, Samantha feels like she’s letting Ruby down, and J’onn confesses an old secret.

star 7.75
2,071 votes
Directors: Jesse Warn
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Alex

#23 - Alex

Season 2 - Episode 19

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 7.74
3,502 votes
Directors: Rob Greenlea
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Crossfire

#24 - Crossfire

Season 2 - Episode 5

Supergirl must beat a ruthless new gang who has been armed with dangerous new alien technology. When Cadmus sends a video to the DEO, the team realizes Cadmus is the one staffing the criminals for a secret mission. Meanwhile, Kara gets Mon-El a job as an intern at CatCo, James makes an important decision and Lena invites Kara to attend one her fundraisers.

star 7.74
4,191 votes
Directors: Glen Winter
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Damage

#25 - Damage

Season 3 - Episode 5

When multiple children get sick from lead poisoning, Morgan Edge points the finger at Lena and blames her creation of the lead bomb she made to save National City from the Daxamites. While Lena knows she never intended any harm, she fears there may have been a flaw in her design, leaving her responsible. Kara teams up with Samantha to clear Lena's name, but it turns out to be harder than they thought. Meanwhile, Alex and Maggie make a crucial decision about the future of their relationship.

star 7.74
1,774 votes
Directors: Kevin Smith
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