Highest Rated Episodes
Barry and Iris’s wedding brings the gang together, but things go awry when villains from Earth-X attack the ceremony. All of ...read more 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 band together with help from their super friends like Citizen Cold, The Ray, Felicity Smoak, Iris West and Alex Danvers to take on their most formidable villains yet. Earth’s mightiest heroes – Green Arrow, Supergirl, The Flash and White Canary – lead their teams into battle to save the world. show less
J'onn has a meeting with his deceased father, while Supergirl, Alex, and Lena join forces to track down Eve and locate ...read more J'onn has a meeting with his deceased father, while Supergirl, Alex, and Lena join forces to track down Eve and locate Lex. show less
The DEO captures a second Worldkiller, Purity. Supergirl and Alex use very different methods of interrogation with Purity in ...read more The DEO captures a second Worldkiller, Purity. Supergirl and Alex use very different methods of interrogation with Purity in the hopes of finding out how to defeat Reign. However, Purity escapes and attacks the city’s subway tunnels. Meanwhile, J’onn, Winn and Mon-El band together to fix the Legion ship. show less
Supergirl, The Flash, Green Arrow and Superman engage in the battle of their lives.
Eliza throws Alex and Maggie a wedding shower, which causes Maggie to reach out to her estranged father. Supergirl joins ...read more 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 mission. show less
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 ...read more 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. show less
Nia has a powerful dream about Agent Liberty but refuses to look at it as a prophetic dream, Kara and Brainy try to persuade Nia ...read more Nia has a powerful dream about Agent Liberty but refuses to look at it as a prophetic dream, Kara and Brainy try to persuade Nia to embrace her destiny, and Manchester Black pays Ben Lockwood a menacing visit. show less
Everyone gathers for Thanksgiving but Kara is feeling down after her televised debate with Ben Lockwood about the anti-alien ...read more 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. show less
MORGAN EDGE SETS HIS SIGHTS ON LENA — When multiple children get sick from lead poisoning, Morgan Edge points the finger at ...read more MORGAN EDGE SETS HIS SIGHTS ON LENA — 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 to save National City from the Daxamites. While Lena knows she never intended any harm, she fears there may have been a flaw in her design, leaving her responsible. Kara teams up with Samantha to clear Lena’s name, but it turns out to be harder than they thought. Meanwhile, Alex and Maggie make a crucial decision about the future of their relationship. show less
Someone tries to kill Morgan Edge and he barely survives. He accuses Lena of being behind the attempt and vows to destroy her. ...read more 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 fears her hatred for Morgan will take her to the Luthor dark side, Kara steps in to help her friend. Meanwhile, after Sam realizes she’s losing time, she confides in Alex who decides to run some medical tests to see if she can find out what’s going on with her new friend show less
As Reign (Odette Annable) continues to terrorize the city, Supergirl teams up with Saturn Girl, and the two recruit ...read more As Reign (Odette Annable) continues to terrorize the city, Supergirl teams up with Saturn Girl, and the two recruit Supergirl’s former enemies, Livewire and Psi, to form a team for a mission to Fort Rozz to recover a prisoner who has information on how to defeat Reign once and for all. show less
Kara deals with the loss on Mon-El by focusing her energy on being Supergirl and concentrating on a mysterious new threat; Alex ...read more Kara deals with the loss on Mon-El by focusing her energy on being Supergirl and concentrating on a mysterious new threat; Alex confesses a secret to Maggie; a citizen of National City has a mysterious connection to Kara; Lena makes a bold move. show less
Supergirl realizes that in order to stop Lex and Leviathan she must work with the one person she never thought she'd trust ...read more Supergirl realizes that in order to stop Lex and Leviathan she must work with the one person she never thought she'd trust again - Lena. Nia keeps dreaming about Brainy (Jesse Rath) but struggles with what the dreams are trying to tell her. Meanwhile, Brainy realizes there is only one way to stop Lex. show less
When Myr’nn (guest star Carl Lumbly) inadvertently causes psychic disturbances at the DEO, Supergirl must work with J’onn to ...read more When Myr’nn (guest star Carl Lumbly) inadvertently causes psychic disturbances at the DEO, Supergirl must work with J’onn to contain the resulting chaos. Meanwhile, Mon-El begins training Kara in fighting techniques he’s learned in the future for battling Worldkillers. show less
Struggling to heal from her injuries inflicted by Reign, Supergirl remains in a dreamlike state, unable to be reached. Mon-El ...read more Struggling to heal from her injuries inflicted by Reign, Supergirl remains in a dreamlike state, unable to be reached. Mon-El recruits one of the Legion members, Brainiac-5 (guest star Jesse Rath), to try to bring her back. Meanwhile, Reign continues her rampage on the city so the DEO teams up with the Legion of Superheroes to try to stop her. show less
Supergirl learns the true depth of Serena’s nefarious plans for Earth. Supergirl, Mon-El and Alura must devise a plan to stop ...read more Supergirl learns the true depth of Serena’s nefarious plans for Earth. Supergirl, Mon-El and Alura must devise a plan to stop her before Serena gets to Earth. J’onn prepares to say goodbye to his father. show less
When Winn and the team discover an alien ship has crash landed deep underwater beneath National City, Kara/Supergirl is called ...read more When Winn and the team discover an alien ship has crash landed deep underwater beneath National City, Kara/Supergirl is called in to investigate. Meanwhile, Hank attempts to bond with his father, Myr’nn. Samantha, eager for some understanding of the changes she has been experiencing, looks to her estranged mother, Patricia Arias, for answers. show less
Kara makes a major life decision. J’onn finds out that special DEO-caliber guns have hit the streets of National City.
Secretly furloughed from prison due to failing health, Lex Luthor visits his sister, Lena, to seek her help finding a cure. ...read more 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. show less
Supergirl and Imra (guest star Amy Jackson) have different ideas on how to stop the third Worldkiller, Pestilence. However, when ...read more Supergirl and Imra (guest star Amy Jackson) have different ideas on how to stop the third Worldkiller, Pestilence. However, when both Alex and Winn are seriously injured by Pestilence, Supergirl and Imra team up to stop the destruction. show less
Colonel Haley makes a surprising decision regarding Supergirl. Kara writes s series of articles highlighting aliens in National ...read more Colonel Haley makes a surprising decision regarding Supergirl. Kara writes s 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. show less
James falls in deeper with the Children of Liberty in his efforts to meet Agent Liberty. Meanwhile, Supergirl and Manchester ...read more 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. show less
Supergirl investigates a mysterious symbol popping up all over National City, tracing its origins back to an ancient prophecy ...read more Supergirl investigates a mysterious symbol popping up all over National City, tracing its origins back to an ancient prophecy and the mark of the World Killer, Reign. Meanwhile, the tension between Lena and Morgan Edge continues to build, causing James to step in and offer up some protection, and possibly igniting a spark in the process. show less
When Winn’s father dies, his estranged mother, Mary (guest star Laurie Metcalf), reappears trying to reconnect and to explain ...read more When Winn’s father dies, his estranged mother, Mary (guest star Laurie Metcalf), reappears trying to reconnect and to explain why she abandoned him all those years ago. Winn is too embittered from his rough childhood to forgive her but when a copycat Toyman attacks, the two must work together to stop him. Mon-El tells Kara something important about the Worldkillers, and Alex becomes suspicious of Myr’nn’s (guest star Carl Lumbly) recent behavior. show less
Between Ben Lockwood's new push to stir up the anti-alien movement and the Elite's desire to target Lockwood and his ...read more 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. show less
Kara investigates a secretive new group whose leader, Thomas Coville, has a mysterious connection to Supergirl. Meanwhile, ...read more Kara investigates a secretive new group whose leader, Thomas Coville, has a mysterious connection to Supergirl. Meanwhile, Samantha feels like she’s letting Ruby down, and J’onn confesses an old secret. show less
Lex Luthor descends upon Washington, DC and summons Lena and Lillian Luthor to the White House. Supergirl realizes she has one ...read more 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. show less
A thief with psychic powers attacks National City and proves to be a formidable opponent for Supergirl.
Still reeling after learning about Lena’s secret, Supergirl asks Guardian for a favor that could alter his relationship with ...read more Still reeling after learning about Lena’s secret, Supergirl asks Guardian for a favor that could alter his relationship with Lena forever. Meanwhile, with all three Worldkillers united, Supergirl and the team brace for an epic battle. show less
When Winn and the team discover an alien ship has crash landed deep underwater beneath National City, Kara/Supergirl is called ...read more When Winn and the team discover an alien ship has crash landed deep underwater beneath National City, Kara/Supergirl is called in to investigate. Meanwhile, Hank attempts to bond with his father, Myr’nn. Samantha, eager for some understanding of the changes she has been experiencing, looks to her estranged mother, Patricia Arias, for answers. show less
Manchester Black breaks out of prison with the help of his new team, The Elite, who are set on punishing the anti-alien forces. ...read more 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. show less
Lena is arrested when Metallo breaks Lillian out of prison and evidence suggests that Lena is responsible.
A magical imp called Mr. Mxyzptlk arrives on Earth and wreaks havoc on National City when Kara doesn't reciprocate his ...read more A magical imp called Mr. Mxyzptlk arrives on Earth and wreaks havoc on National City when Kara doesn't reciprocate his feelings. show less
Aliens attack National City with the intention of collecting a large bounty put out on Supergirl.
When Alex is kidnapped, Supergirl and Maggie must work together to save her.
Supergirl goes on high alert when a new villain comes to National City. Meanwhile, Winn's new girlfriend Lyra gets him in ...read more Supergirl goes on high alert when a new villain comes to National City. Meanwhile, Winn's new girlfriend Lyra gets him in trouble with the law and the Music Meister attacks. show less
Lena's ex-boyfriend Jack Spheer comes to National City to reveal his breakthrough in nanotechnology that has the potential ...read more Lena's ex-boyfriend Jack Spheer comes to National City to reveal his breakthrough in nanotechnology that has the potential to eliminate all diseases. show less
National City is attacked by a Phorian, a normally peaceful race with telekinetic abilities.
Supergirl grapples with whether or not to obey the President's orders regarding Rhea's latest actions. Meanwhile, Cat ...read more Supergirl grapples with whether or not to obey the President's orders regarding Rhea's latest actions. Meanwhile, Cat Grant returns to National City. show less
As the stakes with Lex are raised higher than ever before, Lena must decide how far she is willing to go to stop her brother. ...read more As the stakes with Lex are raised higher than ever before, Lena must decide how far she is willing to go to stop her brother. Meanwhile, Supergirl and the team are faced with a challenge unlike anything they've ever dealt with before and it brings Alex to her breaking point. show less
Alex uses a pair of Obsidian contact lenses to visit a virtual National City where she takes on a whole new persona. Meanwhile, ...read more Alex uses a pair of Obsidian contact lenses to visit a virtual National City where she takes on a whole new persona. Meanwhile, Kelly helps William investigate Lex. Kara deals with difficult news. show less
As Kara doggedly works as a reporter to clear Supergirl's name, Dreamer picks up the slack as National City's protector, ...read more 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. show less