Supergirl: Season 4

M
2018
Poster for Supergirl: Season 4

Kara goes back to her reporting job at CatCo while still working with the DEO, attempting to prove that she... More

Where to watch Supergirl: Season 4

Supergirl: Season 4 is available to stream in Australia now... More on Google TV and Apple TV Store and Foxtel and Binge.

Supergirl: Season 4 episodes

Episode 4.1

American Alien

Diving back into reporting, Kara welcomes a new cub reporter... More to CatCo. Meanwhile, James and Lena argue about James’ impending indictment for acting as the vigilante Guardian, while Alex and Brainy struggle to get in sync at the DEO. Supergirl is called into action when remnants of the anti-alien terrorist organization Cadmus try to assassinate pro-alien leaders, but their endgame turns out to be much more sinister than she expected. J’onn relishes his peaceful new life, but an outing with an old friend causes him concern.

Episode 4.2

Fallout

A shocking revelation causes chaos in National City. Supergirl sets... More out to capture Mercy Graves, while Alex takes control at the DEO. Back at CatCo, Kara decides to write an investigative story on Mercy and asks Lena if she can interview her as Mercy has ties to the Luthors. Meanwhile, Brainy meets Nia and the two end up in a precarious situation.

Episode 4.3

Man of Steel

Ben Lockwood didn't always hate aliens. Through a series of... More incidents, and input from his anti-alien father, Ben slowly transforms from a mild-mannered professor into the villainous Agent Liberty of today.

Episode 4.4

Ahimsa

When Supergirl needs help, Alex asks Lena and Brainiac to... More team up. Meanwhile, J’onn questions his decision to quit the DEO. However, after running into Manchester Black, he realizes there are a lot of ways to help his fellow aliens during this tumultuous time.

EPISODE 4.5

Parasite Lost

Colonel Haley makes a surprising decision regarding Supergirl. Kara writes... More a series of articles highlighting aliens in National City in the hopes that humans will stop being so fearful of them. Unfortunately, the article puts some of the aliens in harm’s way.

EPISODE 4.6

Call to Action

Everyone gathers for Thanksgiving but Kara is feeling down after... More her televised debate with Ben Lockwood about the anti-alien sentiment coursing through National City. Meanwhile, James and Lena argue about the best way to handle the Children of Liberty.

EPISODE 4.7

Rather the Fallen Angel

James falls in deeper with the Children of Liberty in... More his efforts to meet Agent Liberty. Meanwhile, Supergirl and Manchester Black follow a lead on Agent Liberty’s location, but things take a dark turn. Lena kicks off her first set of trials.

EPISODE 4.8

Bunker Hill

Nia has a powerful dream about Agent Liberty but refuses... More to look at it as a prophetic dream and pushes it aside. After noticing something is bothering Nia, Kara enlists Brainy's help, and the two try to persuade Nia to embrace her destiny. Meanwhile, Manchester Black pays Ben Lockwood a menacing visit.

EPISODE 4.9

Elseworlds (III)

Supergirl, The Flash, Green Arrow and Superman engage in the... More battle of their lives.

EPISODE 4.10

Suspicious Minds

Colonel Haley is upset after Supergirl responds to a distress... More call from a Navy ship that turned out to be a deadly alien attack. Colonel Haley reclaims the site as DEO territory and demands that Supergirl step aside. After Supergirl refuses to be told what to do, Haley refocuses her energy on finding out Supergirl's true identity and begins to interrogate all DEO agents, including Alex. Meanwhile, Brainiac-5 tries to persuade Nia to embrace her superpowers but she misinterprets his motives.

EPISODE 4.11

Blood Memory

Kara joins Nia on a trip to Nia's hometown to... More visit her family during the town's annual Harvest Festival. While home, Nia's mother encourages her daughter to embrace her destiny. Meanwhile, Alex deals with a street drug that is turning people violent and giving them temporary superpowers.

EPISODE 4.12

Menagerie

With his P.I. shingle newly hung outside his office, J'onn... More welcomes new clients. Trying to take her mind off what happened at the DEO, Kara decides to team up with J'onn on his latest assignment, which unfortunately ends up tying directly into Alex's current investigation that involves the villain Menagerie. Meanwhile, Lena shares some news with James, but his reaction isn't what she expected. Nia invites Brainy to her Valentine's Day party.

EPISODE 4.13

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

Manchester Black breaks out of prison with the help of... More his new team, The Elite, who are set on punishing the anti-alien forces. Supergirl pulls double duty as she tries to apprehend Manchester Black and his team as well as deal with a shocking new development with Ben Lockwood.

EPISODE 4.14

Stand and Deliver

Between Ben Lockwood’s new push to stir up the anti-alien... More movement and the Elite’s desire to target Lockwood and his minions, Supergirl is concerned about the safety of the American people – both human and alien. When Lockwood organizes a rally, the aliens decide to peacefully protest. Brainiac and J’onn join the alien march while Supergirl and Dreamer patrol to keep everyone safe. Meanwhile, James picks up his camera again to cover the march for CatCo, and Hayley assigns Alex a job that clashes with her beliefs. When The Elite and Ben Lockwood stir up trouble at the rally, Supergirl is forced to take a stand.

EPISODE 4.15

O Brother, Where Art Thou?

Secretly furloughed from prison due to failing health, Lex Luthor... More visits his sister, Lena, to seek her help finding a cure. Savvy as ever, Lena is suspicious of Lex's motives but when she's faced with a life and death situation, she must decide how she truly feels about her brother. Meanwhile, Supergirl and J'onn face off against Manchester Black. James' sister Kelly comes to town.

EPISODE 4.16

The House of L

In the wake of Lex Luthor's return, the show flashes... More back to what he's been doing for the last two years and how his secret machinations and plans have affected Supergirl and Lena.

EPISODE 4.17

All About Eve

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

EPISODE 4.18

Crime and Punishment

Kara and Lena head to Stryker's Island to search for... More clues on how to defeat Lex. At the prison, Kara tries to befriend a nosy prisoner, Steve, who may have insight into what Lex was doing, while Lena studies an array of puzzles Lex left behind in the hopes of discovering his whereabouts. While there, a prison riot breaks out and Kara must find a way to stop the prisoners without revealing her secret identity as Supergirl. Meanwhile, Kelly encourages James to talk to someone for his PTSD, and Alex faces off against Ben Lockwood after he storms the DEO and acquires some powerful weapons to hunt Supergirl.

EPISODE 4.19

American Dreamer

As Kara doggedly works as a reporter to clear Supergirl's... More name, Dreamer picks up the slack as National City's protector, which leads to a showdown with Ben Lockwood. James takes drastic measures to relieve his PTSD.

EPISODE 4.20

Will The Real Miss Tessmacher Please Stand Up?

Kara and Lena head to Kaznia to hunt down Lex.... More However, Eve Tessmacher sets a trap for the duo that could ultimately reveal that Kara is Supergirl. Meanwhile, Alex gets a long-awaited phone call, James practices using his powers, and Ben Lockwood takes a dangerous stand inside the DEO.

EPISODE 4.21

Red Dawn

Kara comes face to face with Red Daughter and the... More two engage in an epic battle. Determined to find a way to extract the Harun-El, Lena turns to an unlikely source for help - Lillian Luthor. Meanwhile, Alex realizes she's missing parts of her memory, and Brainy, Nia and J'onn set out to track down aliens who have been abducted by Lex.

EPISODE 4.22

The Quest for Peace

Lex Luthor descends upon Washington, DC and summons Lena and... More Lillian Luthor to the White House. Supergirl realizes she has one last chance to stop Lex and turns to the power of the press to help her.

Supergirl: Season 4 | Ratings & Reviews