Supergirl - Season 4

In season four, Supergirl is facing a bigger threat than she's ever faced before – a new wave of anti-alien sentiment, spreading across National City that’s fomented by Agent Liberty. As Kara mentors a new reporter at CatCo, Nia Nal, and tries to use the power of the press to shine a light on the issues threatening to tear the city apart, Supergirl takes to the skies to battle the many villains who rise up in this era of divisiveness.

22 Episodes

American Alien

Season 4 - Episode 1

Diving back into reporting, Kara welcomes a new cub reporter to CatCo. Meanwhile, James and Lena argue about James’ impending indictment for...

Fallout

Season 4 - Episode 2

A shocking revelation causes chaos in National City. Supergirl sets out to capture Mercy Graves, while Alex takes control at the DEO. Back a...

Man of Steel

Season 4 - Episode 3

Ben Lockwood didn't always hate aliens. Through a series of incidents, and input from his anti-alien father, Ben slowly transforms from a mi...

Ahimsa

Season 4 - Episode 4

When Supergirl needs help, Alex asks Lena and Brainiac to team up. Meanwhile, J’onn questions his decision to quit the DEO. However, after r...

Parasite Lost

Season 4 - Episode 5

Colonel Haley makes a surprising decision regarding Supergirl. Kara writes a series of articles highlighting aliens in National City in the ...

Call to Action

Season 4 - Episode 6

Everyone gathers for Thanksgiving but Kara is feeling down after her televised debate with Ben Lockwood about the anti-alien sentiment cours...

Rather the Fallen Angel

Season 4 - Episode 7

James falls in deeper with the Children of Liberty in his efforts to meet Agent Liberty. Meanwhile, Supergirl and Manchester Black follow a ...

Bunker Hill

Season 4 - Episode 8

Nia has a powerful dream about Agent Liberty but refuses to look at it as a prophetic dream and pushes it aside. After noticing something is...

Elseworlds (III)

Season 4 - Episode 9

Supergirl, The Flash, Green Arrow and Superman engage in the battle of their lives. The crossover starts on The Flash S05E09 Elseworlds (I)...

Suspicious Minds

Season 4 - Episode 10

Colonel Haley is upset after Supergirl responds to a distress call from a Navy ship that turned out to be a deadly alien attack. Colonel Hal...

Blood Memory

Season 4 - Episode 11

Kara joins Nia on a trip to Nia's hometown to visit her family during the town's annual Harvest Festival. While home, Nia's mother encourage...

Menagerie

Season 4 - Episode 12

With his P.I. shingle newly hung outside his office, J'onn welcomes new clients. Trying to take her mind off what happened at the DEO, Kara ...

What's So Funny About Truth, Justice, and the American Way?

Season 4 - Episode 13

Manchester Black breaks out of prison with the help of his new team, The Elite, who are set on punishing the anti-alien forces. Supergirl pu...

Stand and Deliver

Season 4 - Episode 14

Between Ben Lockwood’s new push to stir up the anti-alien movement and the Elite’s desire to target Lockwood and his minions, Supergirl is c...

O Brother, Where Art Thou?

Season 4 - Episode 15

Secretly furloughed from prison due to failing health, Lex Luthor visits his sister, Lena, to seek her help finding a cure. Savvy as ever, L...

The House of L

Season 4 - Episode 16

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...

All About Eve

Season 4 - Episode 17

Supergirl must deal with the destructive aftermath of Lex's nefarious plans. Shocked at what Lex has created, Supergirl faces her biggest ch...

Crime and Punishment

Season 4 - Episode 18

Kara and Lena head to Stryker's Island to search for clues on how to defeat Lex. At the prison, Kara tries to befriend a nosy prisoner, Stev...

American Dreamer

Season 4 - Episode 19

As Kara doggedly works as a reporter to clear Supergirl's name, Dreamer picks up the slack as National City's protector, which leads to a sh...

Will The Real Miss Tessmacher Please Stand Up?

Season 4 - Episode 20

Kara and Lena head to Kaznia to hunt down Lex. However, Eve Tessmacher sets a trap for the duo that could ultimately reveal that Kara is Sup...

Red Dawn

Season 4 - Episode 21

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...

The Quest for Peace

Season 4 - Episode 22

Lex Luthor descends upon Washington, DC and summons Lena and Lillian Luthor to the White House. Supergirl realizes she has one last chance t...