• Score 7.8
  • Premiered: Oct 2015
  • Episodes: 65
  • Followers: 7816
  • Rank #93
  • Running
  • The CW
  • Monday at 8

Seasons:

You need to be logged in to mark episodes as watched. Log in or sign up.

Season 3 Disqus
3x1
Girl of Steel
Air date
Oct 09, 2017
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 .. show full overview
3x2
Triggers
Air date
Oct 16, 2017
Psi, a thief with psychic powers, attacks National City. Able to immobilize people by tapping into their worst fears, Psi proves a formidable opponent for Supergirl. Meanwhile, James and .. show full overview
3x3
Far from the Tree
Air date
Oct 23, 2017
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.
3x4
The Faithful
Air date
Oct 30, 2017
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.
3x5
Damage
Air date
Nov 06, 2017
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. .. show full overview
3x6
Midvale
Air date
Nov 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.
3x7
Wake Up
Air date
Nov 20, 2017
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 .. show full overview
3x8
Crisis on Earth-X (1)
Air date
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 .. show full overview
3x9
Reign
Air date
Dec 04, 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 .. show full overview
3x10
Legion of Super-Heroes
Air date
Jan 15, 2018
Struggling to heal from her injuries inflicted by Reign, Supergirl remains in a dreamlike state, unable to be reached. Mon-El recruits one of the Legion members, Brainiac-5, to try to .. show full overview
3x11
Fort Rozz
Air date
Jan 22, 2018
As Reign continues to terrorize the city, Supergirl teams up with Saturn Girl, and the two recruit Supergirl’s former enemies, Livewire and Psi, to form a team for a mission to Fort Rozz .. show full overview
3x12
For Good
Air date
Jan 29, 2018
Someone tries to kill Morgan Edge and he barely survives. He accuses Lena of being behind the attempt and vows to destroy her. When Lena fears her hatred for Morgan will take her to the .. show full overview
3x13
Both Sides Now
Air date
Feb 05, 2018
The DEO captures a second Worldkiller, Purity. Supergirl and Alex use very different methods of interrogation with Purity in the hopes of finding out how to defeat Reign. However, Purity .. show full overview
3x14
Schott Through the Heart
Air date
Apr 16, 2018
When Winn’s father dies, his estranged mother, Mary, reappears trying to reconnect and to explain why she abandoned him all those years ago. Winn is too embittered from his rough .. show full overview
3x15
In Search of Lost Time
Air date
Apr 23, 2018
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.
3x16
Of Two Minds
Air date
Apr 30, 2018
Supergirl and Imra have different ideas on how to stop the third Worldkiller, Pestilence. However, when both Alex and Winn are seriously injured by Pestilence, Supergirl and Imra team up to stop the destruction.
3x17
Trinity
Air date
May 07, 2018
Still reeling after learning about Lena’s secret, Supergirl asks Guardian for a favor that could alter his relationship with Lena forever. Meanwhile, with all three Worldkillers united, Supergirl and the team brace for an epic battle.
3x18
Shelter from the Storm
Air date
May 14, 2018
When Reign starts hunting Ruby, Supergirl and Alex work together to keep her safe. Supergirl and J’onn look to Sam’s motherfor advice on how to stop Reign and come away with some shocking news.
3x19
The Fanatical
Air date
May 21, 2018
When Tanya, 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 learns Guardian’s identity .. show full overview
3x20
Dark Side of the Moon
Air date
May 28, 2018
Supergirl is stunned to discover that a part of Krypton survived. Meanwhile, Alex is attacked while out with Ruby, and Lena considers how far she will go to keep Reign contained.
3x21
Not Kansas
Air date
Jun 04, 2018
Kara makes a major life decision. Meanwhile, J’onn finds out that special DEO-caliber guns have hit the streets of National City.
3x22
Make It Reign
Air date
Jun 11, 2018
This episode has no summary.
3x23
Supergirl Returns
Air date
Jun 18, 2018
(Season Finale)

If there are missing episodes or banners (and they exist on TheTVDB) you can request an automatic full show update:

Request show update

If you like this show, you may also enjoy:

Season 3 Disqussion