Supergirl - Season 3

As season three returns with all-new supercharged adventures this fall, Kara and team will come up against a new threat in the form of DC Worldkiller, Reign.

23 Episodes

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 c...

Triggers

Season 3 - Episode 2

Psi, a thief with psychic powers, attacks National City. Able to immobilize people by tapping into their worst fears, Psi proves a formidabl...

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...

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 li...

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...

Midvale

Season 3 - Episode 6

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 t...

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 investi...

Crisis on Earth-X (I)

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...

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 o...

Legion of Superheroes

Season 3 - Episode 10

Struggling to heal from her injuries inflicted by Reign, Supergirl remains in a dreamlike state, unable to be reached. Mon-El recruits one o...

Fort Rozz

Season 3 - Episode 11

As Reign continues to terrorize the city, Supergirl teams up with Saturn Girl, and the two recruit Supergirl’s former enemies, Livewire and ...

For Good

Season 3 - Episode 12

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 fea...

Both Sides Now

Season 3 - Episode 13

The DEO captures a second Worldkiller, Purity. Supergirl and Alex use very different methods of interrogation with Purity in the hopes of fi...

Schott Through the Heart

Season 3 - Episode 14

When Winn’s father dies, his estranged mother, Mary, reappears trying to reconnect and to explain why she abandoned him all those years ago....

In Search of Lost Time

Season 3 - Episode 15

Myr'nn inadvertently causes psychic disturbances at the DEO; Supergirl must work with J'onn to contain the chaos; Mon-El begins training Kar...

Of Two Minds

Season 3 - Episode 16

Supergirl and Imra have different ideas on how to stop the third Worldkiller, Pestilence. However, when both Alex and Winn are seriously inj...

Trinity

Season 3 - Episode 17

Still reeling after learning about Lena’s secret, Supergirl asks Guardian for a favor that could alter his relationship with Lena forever. M...

Shelter from the Storm

Season 3 - Episode 18

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 ho...

The Fanatical

Season 3 - Episode 19

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 sav...

Dark Side of the Moon

Season 3 - Episode 20

Supergirl is stunned to discover that a part of Krypton survived. Meanwhile, Alex is attacked while out with Ruby, and Lena considers how fa...

Not Kansas

Season 3 - Episode 21

Kara makes a major life decision. Meanwhile, J'onn finds out that special DEO-caliber guns have hit the streets of National City.

Make It Reign

Season 3 - Episode 22

Supergirl learns the true depth of Selena's nefarious plans for Earth. Supergirl, Mon-El and Alura must devise a plan to stop her before Sel...

Battles Lost and Won

Season 3 - Episode 23

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