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Season 3 – Supergirl

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2017

Drama

Fantasy

Action

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Popcornmeter

78%

Tomatometer

289 Reviews

54%

Popcornmeter

500+ Ratings

At 12 years old, Kara Zor-El escapes doom on planet Krypton to find protection on Earth with the Danver family, where she grows up in the shadow of her foster sister, Alex, and learns to hide the extraordinary powers she shares with her cousin, Superman. Now an adult living in National City and working for media mogul Cat Grant, Kara finds her days of keeping her abilities a secret are over when super-secret agency head Hank Henshaw enlists her to help protect the city's citizens from threats. Finally coming into her own, Kara must juggle her new responsibilities with her very human relationships.

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Critics Consensus

Heavier themes lead to higher stakes, but Supergirl gives its eponymous heroine and her fellow supers plenty of room for growth, creating a well-balanced, engaging third season.

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Allison Keene

Collider

There was a lot to process, in what felt like a chaotic end-cap to a very uneven season.

Jul 24, 2018

Full Review

Caroline Siede

Consequence

Supergirl is a show that's smarter than it's sometimes given credit for.

Apr 18, 2018

Full Review

Allison Shoemaker

CBR

If Supergirl spends its [third] season letting Kara Danvers rediscover herself, one moment of solace at a time, it'll be a season well-spent. If not... well, it'll probably be pretty good, no matter what it does.

Dec 12, 2017

Full Review

John Tones

Espinof

It is a master class on how to keep your feet on Earth and launch clear, honest, intelligent and fun superhero adventures every week. [Full Review in Spanish]

Aug 7, 2019

Full Review

David Hogan

hoganreviews.co.uk

It was just full of depressed heroes, drama and angst, and had so little actual superheroics and fun...

Rated: 2/5

Feb 17, 2019

Full Review

Andrew Pollard

Starburst

The most intriguing, engaging, and spectacular season of the series to date.

Rated: 8/10

Sep 25, 2018

Full Review

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tiago m

A temporada apresenta quedas signicativas e o que já estava ruim piora, a vilã é genérica mas pela sua ''incrivel'' concorrencia é a melhor da série, e os novos personagens são muitos genéricos e não apresentam nada a trama principal

Rated 2.5 out of 5 stars

12/07/24

Full Review

julian p

I really loved it I didn't expect much from it because of S1 but S2 was really cool so I watched this, gave it a shot, and did not disappoint. My only ick about this is that Supergirl didn't kill Regin. Oliver, Malcolm, Bruce Wayne, etc, always kill their villains even Clark does in Man of Steel he killed Zod, but I don't understand why Kara didn't kill Regin. Other than that I give this season a 10/10

Rated 5 out of 5 stars

03/16/24

Full Review

I love it !Act brilliantly with face-paced plot

Rated 4.5 out of 5 stars

03/04/23

Full Review

Freedom T

Season was supergirl at its best

Rated 4.5 out of 5 stars

01/24/23

Full Review

Sankalp good S

It's a absolutely season of action packed adventure nd rewatchable scene boombastock🌟♥️👌😃

Rated 5 out of 5 stars

11/23/22

Full Review

Audience Member

Not a bad third season. Admittedly weaker than the first two seasons and it doesn't really have much consistency at times, but for what it is, engaging and fun to watch, and it is nice to see some familiar faces return for an encore.

Rated 4 out of 5 stars

01/09/23

Full Review

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Melissa Benoist

Kara Danvers

Chyler Leigh

Alex Danvers

Mehcad Brooks

James Olsen

David Harewood

Hank Henshaw

Jeremy Jordan

Winslow "Winn" Schott

Chris Wood

Mon-El

Episode 1

Aired Oct 9, 2017

Girl of Steel

Kara deals with the loss of Mon-El by focusing her energy on being Supergirl and concentrating on a mysterious new threat; Alex confesses a secret to Maggie; a citizen of National City has a mysterious connection to Kara; Lena makes a bold move.

Details

Episode 2

Aired Oct 16, 2017

Triggers

A thief who has psychic powers attacks National City, immobilizing victims by tapping into their worst fears; James and Lena are at an impasse; Samantha starts her new job at L-Corp.

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Episode 3

Aired Oct 23, 2017

Far From the Tree

Eliza throws Alex and Maggie a wedding shower; Maggie reaches out to her estranged father; Supergirl joins J'onn on a personal mission.

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Episode 4

Aired Oct 30, 2017

The Faithful

Kara investigates a new group that has a mysterious connection to Supergirl; Samantha feels like she's letting Ruby down; J'onn confesses an old secret.

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Episode 5

Aired Nov 6, 2017

Damage

Morgan Edge blames Lena's lead bomb when multiple children get sick; Kara teams up with Samantha to clear Lena's name; Alex and Maggie make a decision about their relationship.

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Episode 6

Aired Nov 13, 2017

Midvale

Kara and Alex head home to Midvale for a little rest; Kara recalls a painful childhood memory that brought the Danver sisters closer together.

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Episode 7

Aired Nov 20, 2017

Wake Up

Kara investigates when an alien ship crash lands deep underwater beneath National City; Hank attempts to bond with his father; Samantha looks to her estranged mother for answers.

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Episode 8

Aired Nov 27, 2017

Crisis on Earth-X

Barry and Iris' wedding brings the gang together, but things go awry when villains from Earth-X attack the ceremony.

Details

Episode 9

Aired Dec 4, 2017

Reign

Supergirl learns that a mysterious symbol popping up in the city is the mark of the World Killer, Reign; tension between Lena and Morgan Edge continues to build.

Details

Episode 10

Aired Jan 15, 2018

Legion of Superheroes

Struggling to heal from her injuries inflicted by Reign, Supergirl remains in a dreamlike state, unable to be reached; Mon-El recruits a Legion member to try bringing her back; the DEO teams up with the Legion of Superheroes to try to stop Reign.

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Episode 11

Aired Jan 22, 2018

Fort Rozz

Supergirl teams up with Saturn Girl, Livewire and Psi to recover a prisoner who has information on how to defeat Reign; Alex baby-sits Ruby.

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Episode 12

Aired Jan 29, 2018

For Good

Kara steps in to help Lena when she is threatened by Morgan; Alex decides to run medical tests to see if she can help Sam.

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Episode 13

Aired Feb 5, 2018

Both Sides Now

When the DEO captures a second Worldkiller, Supergirl and Alex use very different methods of interrogation in an effort to learn how to defeat Reign; J'onn, Winn and Mon-El band together to fix the Legion ship.

Details

Episode 14

Aired Apr 16, 2018

Schott Through the Heart

When Winn's father dies, his estranged mother tries to reconnect and explain why she abandoned him; a copycat Toyman attacks and the two must work together to stop him; Mon-El tells Kara something important about the Worldkillers.

Details

Episode 15

Aired Apr 23, 2018

In Search of Lost Time

Myr'nn inadvertently causes psychic disturbances at the DEO; Supergirl must work with J'onn to contain the chaos; Mon-El begins training Kara in fighting techniques he's learned in the future.

Details

Episode 16

Aired Apr 30, 2018

Of Two Minds

Supergirl and Imra have different ideas on how to stop the third Worldkiller, Pestilence; Pestilence seriously injures both Alex and Winn, Supergirl and Imra team up to stop the destruction.

Details

Episode 17

Aired May 7, 2018

Trinity

Still reeling after learning Lena's secret, Supergirl asks Guardian for a favor that could alter his relationship with Lena forever; with all three Worldkillers united, Supergirl and the team brace for an epic battle.

Details

Episode 18

Aired May 14, 2018

Shelter From the Storm

When Reign starts hunting Ruby, Supergirl and Alex work together to keep her safe; Supergirl and J'onn look to Sam's mother for advice on how to stop Reign.

Details

Episode 19

Aired May 21, 2018

The Fanatical

When a disciple of Coville's escapes from what's left of his cult, she gives Kara and James a journal that could hold the key to saving Sam; someone threatens to expose James if he doesn't do what is asked of him.

Details

Episode 20

Aired May 28, 2018

Dark Side of the Moon

Supergirl is stunned to learn that a part of Krypton survived; Alex is attacked while out with Ruby; Lena considers how far she will go to keep Reign contained.

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Episode 21

Aired Jun 4, 2018

Not Kansas

Kara makes a major life decision; J'onn discovers that special DEO-caliber guns have hit the streets of National City.

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Episode 22

Aired Jun 11, 2018

Make It Reign

After learning the true depth of Serena's nefarious plans for Earth, Supergirl, Mon-El and Alura must come up with a plan to stop her; J'onn prepares to say goodbye to his father.

Details

Episode 23

Aired Jun 18, 2018

Battles Lost and Won

Supergirl and the team face off against Serena in an epic battle for Earth.

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Supergirl: Season 3 Episode 23 Preview