Season 4 (2018)

American Alien
6.3

October 14, 2018 • 42m

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

Fallout
6.9

October 21, 2018 • 42m

A shocking revelation causes chaos in National City. Supergirl sets out to capture Mercy Graves, while Alex takes control at the D...Read more

Man of Steel
6.9

October 28, 2018 • 42m

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

Ahimsa
6.7

November 4, 2018 • 42m

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

Parasite Lost
6.4

November 11, 2018 • 42m

Colonel Haley makes a surprising decision regarding Supergirl. Kara writes a series of articles highlighting aliens in National Ci...Read more

Call to Action
6.3

November 18, 2018 • 42m

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

Rather the Fallen Angel
6.5

November 25, 2018 • 42m

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

Bunker Hill
6.5

December 2, 2018 • 42m

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

Elseworlds (III)
6.7

December 11, 2018 • 43m

Supergirl, The Flash, Green Arrow and Superman engage in the battle of their lives. The crossover starts on The Flash S05E09 Else...Read more

Suspicious Minds
6.2

January 20, 2019 • 42m

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

Blood Memory
6.3

January 27, 2019 • 42m

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...Read more

Menagerie
6.3

February 17, 2019 • 42m

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 ...Read more

What's So Funny About Truth, Justice, and the American Way?
6.3

March 3, 2019 • 42m

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

Stand and Deliver
6.1

March 10, 2019 • 42m

Between Ben Lockwood’s new push to stir up the anti-alien movement and the Elite’s desire to target Lockwood and his minions, Supe...Read more

O Brother, Where Art Thou?
6.8

March 17, 2019 • 42m

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

The House of L
7.4

March 24, 2019 • 42m

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 machin...Read more

All About Eve
6.0

March 31, 2019 • 42m

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

Crime and Punishment
6.3

April 21, 2019 • 42m

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 pris...Read more

American Dreamer
6.1

April 28, 2019 • 42m

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

Will The Real Miss Tessmacher Please Stand Up?
5.9

May 5, 2019 • 42m

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

Red Dawn
6.6

May 12, 2019 • 42m

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, ...Read more

The Quest for Peace
6.4

May 19, 2019 • 42m

Lex Luthor descends upon Washington, DC and summons Lena and Lillian Luthor to the White House. Supergirl realizes she has one las...Read more