Supergirl: Season 4

2018 · 22 episodes · ★ 6.6

What Season 4 of Supergirl

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.

22episodes

Oct 14, 2018aired

May 19, 2019latest episode

15.4 hrtotal runtime

Season 4 Episodes

4x01 American Alien
Oct 14, 2018 · 42 min · ★ 6.5
Diving back into reporting, Kara welcomes a new cub reporter 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.
Directing: Jesse Warn · Writing: Gabriel Llanas, Aadrita Mukerji · Starring: Rhona Mitra, Lynda Carter, Vincent Gale, Cardi Wong
4x02 Fallout
Oct 21, 2018 · 42 min · ★ 7.0
A shocking revelation causes chaos in National City. Supergirl sets 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.
Directing: Harry Jierjian · Writing: Maria Maggenti, Daniel Beaty · Starring: Rhona Mitra, Lynda Carter, Bruce Boxleitner, Mathew Yanagiya
4x03 Man of Steel
Oct 28, 2018 · 42 min · ★ 7.1
Ben Lockwood didn't always hate aliens. Through a series of incidents, and input from his anti-alien father, Ben slowly transforms from a mild-mannered professor into the villainous Agent Liberty of today.
Directing: Jesse Warn · Writing: Derek Simon, Rob Wright · Starring: Rhona Mitra, Xander Berkeley, Iris Quinn, Raf Rogers
4x04 Ahimsa
Nov 4, 2018 · 42 min · ★ 6.7
When Supergirl needs help, Alex asks Lena and Brainiac to 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.
Directing: Armen V. Kevorkian · Writing: Katie Rose Rogers, Jess Kardos · Starring: Rhona Mitra, David Ajala, Bruce Boxleitner, Tiya Sircar
4x05 Parasite Lost
Nov 11, 2018 · 42 min · ★ 6.5
Colonel Haley makes a surprising decision regarding Supergirl. Kara writes 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.
Directing: David McWhirter · Writing: Maria Maggenti, Aadrita Mukerji · Starring: Michelle Krusiec, Shannon Chan-Kent, Adam Levy, Kwesi Ameyaw
4x06 Call to Action
Nov 18, 2018 · 42 min · ★ 6.5
Everyone gathers for Thanksgiving but Kara is feeling down after 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.
Directing: Antonio Negret · Writing: Gabriel Llanas, Daniel Beaty · Starring: David Ajala, Steve Byers, Graham Verchere, April Parker Jones
4x07 Rather the Fallen Angel
Nov 25, 2018 · 42 min · ★ 6.8
James falls in deeper with the Children of Liberty in 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.
Directing: Chad Lowe · Writing: Katie Rose Rogers, Dana Horgan · Starring: David Ajala, Steve Byers, Michael Johnston, Rebekah Asselstine
4x08 Bunker Hill
Dec 2, 2018 · 42 min · ★ 6.8
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 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.
Directing: Kevin Smith · Writing: Eric Carrasco, Rob Wright · Starring: David Ajala, Bruce Boxleitner, LaMonica Garrett, April Parker Jones
4x09 Elseworlds (III) Mid-Season Finale
Dec 11, 2018 · 43 min · ★ 7.0
Supergirl, The Flash, Green Arrow and Superman engage in the battle of their lives.The crossover starts on The Flash S05E09 Elseworlds (I) and Arrow S07E09 Elseworlds (II).
Directing: Jesse Warn · Writing: Robert Rovner, Derek Simon · Starring: LaMonica Garrett, Carlos Valdes, Danielle Panabaker, Jeremy Davies
4x10 Suspicious Minds
Jan 20, 2019 · 42 min · ★ 6.4
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 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.
Directing: Rachel Talalay · Writing: Gabriel Llanas, Maria Maggenti · Starring: Graeme Guthrie, Russell Wong, April Parker Jones, Bethany Brown
4x11 Blood Memory
Jan 27, 2019 · 42 min · ★ 6.6
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 encourages her daughter to embrace her destiny. Meanwhile, Alex deals with a street drug that is turning people violent and giving them temporary superpowers.
Directing: Shannon Kohli · Writing: Jessica Queller · Starring: Lukas Gage, Brennan Mejia, Garwin Sanford, Tedra Rogers
4x12 Menagerie
Feb 17, 2019 · 42 min · ★ 6.3
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 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.
Directing: Stefan Pleszczynski · Writing: Daniel Beaty · Starring: Bruce Boxleitner, Jessica Meraz, Graham Verchere, April Parker Jones
4x13 What's So Funny About Truth, Justice, and the American Way?
Mar 3, 2019 · 42 min · ★ 6.6
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 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.
Directing: Alexis Ostrander · Writing: Eric Carrasco, Aadrita Mukerji · Starring: David Ajala, Bruce Boxleitner, Louis Ozawa, Jessica Meraz
4x14 Stand and Deliver
Mar 10, 2019 · 42 min · ★ 6.3
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 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.
Directing: Andi Armaganian · Writing: Rob Wright, Jess Kardos · Starring: David Ajala, Jonathan Bennett, Louis Ozawa, Jessica Meraz
4x15 O Brother, Where Art Thou?
Mar 17, 2019 · 42 min · ★ 6.7
Secretly furloughed from prison due to failing health, Lex Luthor 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.
Directing: Tawnia McKiernan · Writing: Derek Simon, Nicki Holcomb · Starring: Azie Tesfai, David Ajala, William MacDonald, Byron Brisco
4x16 The House of L
Mar 24, 2019 · 42 min · ★ 7.4
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 plans have affected Supergirl and Lena.
Writing: Eric Carrasco, Dana Horgan · Starring: Gabriel Gurevich, Candus Churchill, Casey Dudley, Arran Henn
4x17 All About Eve
Mar 31, 2019 · 42 min · ★ 6.2
Supergirl must deal with the destructive aftermath of Lex's nefarious plans. Shocked at what Lex has created, Supergirl faces her biggest challenge yet.
Directing: Ben Hernandez Bray · Writing: Katie Rose Rogers, Brooke Pohl · Starring: Azie Tesfai, Bruce Boxleitner, Jill Morrison, Graham Verchere
4x18 Crime and Punishment
Apr 21, 2019 · 42 min · ★ 6.3
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, 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.
Directing: Antonio Negret · Writing: Aadrita Mukerji, Lindsay Sturman · Starring: Azie Tesfai, Bruce Boxleitner, April Parker Jones, Mia Fiona Kut
4x19 American Dreamer
Apr 28, 2019 · 42 min · ★ 6.4
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 showdown with Ben Lockwood. James takes drastic measures to relieve his PTSD.
Directing: David Harewood · Writing: Daniel Beaty, Jess Kardos · Starring: Azie Tesfai, Graham Verchere, Dylan Poyser, Ryan S Williams
4x20 Will The Real Miss Tessmacher Please Stand Up?
May 5, 2019 · 42 min · ★ 6.1
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 Supergirl. Meanwhile, Alex gets a long-awaited phone call, James practices using his powers, and Ben Lockwood takes a dangerous stand inside the DEO.
Directing: Shannon Kohli · Writing: Katie Rose Rogers · Starring: Azie Tesfai, Bruce Boxleitner, Graham Verchere, Donna Benedicto
4x21 Red Dawn
May 12, 2019 · 42 min · ★ 6.8
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 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.
Directing: Alexis Ostrander · Writing: Eric Carrasco, Gabriel Llanas · Starring: Azie Tesfai, Bruce Boxleitner, April Parker Jones, Izabela Vidovic
4x22 The Quest for Peace Season Finale
May 19, 2019 · 42 min · ★ 6.4
Lex Luthor descends upon Washington, DC and summons Lena and 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.
Directing: Jesse Warn · Writing: Derek Simon, Rob Wright · Starring: Azie Tesfai, Bruce Boxleitner, LaMonica Garrett, Graham Verchere