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In this superhero adventure series, Kara Zor-El, the cousin of the Kryptonian hero Superman, must learn how to use her own super powers to fight against evil. The series is part of The CW's stable of DC Comics-based titles, and it sometimes features crossovers from the other series.

Monday 8:00 PM et/pt on The CW
3 Seasons, 65 Episodes
October 26, 2015
Action & Adventure, Superhero
6.5/10
Cast: Melissa Benoist, Mehcad Brooks, Chyler Leigh, Jeremy Jordan
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Supergirl Full Episode Guide

  • 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.

  • Supergirl learns the true depth of Selenas (recurring guest star ANJALI JAY) nefarious plan for Earth. While Jonn prepares to say goodbye to his father, Supergirl, Mon-El and Alura (reccurring guest star ERICA DURANCE) must devise a plan to stop Selena before she gets to Earth.

  • Kara makes a major life decision. Meanwhile, J'onn finds out that special DEO-caliber guns have hit the streets of.

  • Supergirl is stunned to discover that a part of Krypton survived. Meanwhile, Alex is attacked while out with Ruby, and Lena considers how far she will go to keep Reign contained.

  • When Tanya, a disciple of Coville's, escapes from what's left of his cult, she gives Kara and James a journal that could hold the key to saving Sam. Someone learns Guardian's identity and threatens to expose James if he doesn't do what they ask. James contemplates what it means to be a black vigilante without a mask.

  • When Reign starts hunting Ruby, Supergirl and Alex work together to keep her safe. Supergirl and J'onn look to Sam's mother (guest star Betty Buckley) for advice on how to stop Reign and come away with some shocking news.

  • 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.

  • Supergirl and Imra 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.

  • When Myr'nn 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.

  • When Winn's father dies, his estranged mother, Mary, 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 recent behavior.

  • 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.

  • 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.

  • As Reign 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. Meanwhile, Alex babysits Ruby.

  • 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, 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.

  • 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.

  • 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

  • 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.

  • Kara and Alex head home to Midvale for a little R&R. While there, Kara recalls a painful memory of a childhood friend's death and how that traumatic experience brought the Danver sisters closer together.

  • 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

  • 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.

  • 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.

  • Psi, a thief with psychic powers, attacks National City. Able to immobilize people by tapping into their worst fears, Psi proves a formidable opponent for Supergirl. Meanwhile, James and Lena are at an impasse, and Samantha starts her new job at.

  • Kara deals with the loss of Mon-El by focusing all her energy on being Supergirl and the mysterious new threat against National City. Alex confesses a secret to Maggie about their impending nuptials. A citizen of National City has a mysterious connection to Kara, and Lena makes a bold move.

  • Lillian comes up with the ultimate weapon to drive the Daxamites off of Earth, but Supergirl is reluctant to make the sacrifice necessary. Instead she challenges Rhea to a ritual trial by combat.

  • Alex takes over as Acting Director of the DEO as the Daxamites take over National City, open fire on Air Force One, and recruit a familiar face to their side. Meanwhile, Cat Grant returns to National City to inspire Supergirl and the populace.

  • Alien refugees, the Phorians, trigger telekinetic quakes every time that Lena and Rhea activate the portal. While James tries to get through to one alien boy who knows where the others are, the DEO tries to find the portal before it's too late for National City.

  • A man abducts Alex and threatens to kill her unless Kara helps a supermax prisoner escape... and the abductor knows that Kara is Supergirl. Meanwhile, Rhea approaches Lena with an offer.

  • Lena’s ex-boyfriend, Jack Spheer, arrives at National City to reveal his big breakthrough in nano-technology, which has the potential to abolish all illness. Lena invites Kara to go to Jack’s conference with her for support.

  • A big bounty is placed on Supergirl and aliens from far and near strike National City bent on extinguishing the woman of steel.

  • A new villain comes to National City, putting Supergirl on high alert. Meanwhile, Winn's girlfriend, Lyra, gets Winn in trouble with the law. Maggie attempts to help Winn but old loyalties get in the way. The Music Meister attacks Supergirl.

  • As Alex looks for Jeremiah and Kara examines a series of alien kidnappings, the sisters learn they must break the rules to hinder a new Cadmus plot.

  • When Jeremiah Danvers is recovered from Cadmus, Alex and Kara are excited to have their dad back. The Danvers plan a family dinner to celebrate but things go wrong when a skeptical Mon-El begins to question Jeremiah about his quick return.

  • When Mr. Mxyzptlk, a magical imp, appears on Earth and reveals his love for Kara, she attempts to let him down easy, thinking him harmless. However, he perceives it as a challenge and begins to wreak havoc on National City.

  • After Metallo escapes from prison and frees Lillian Luthor, the authorities blame Lena for getting him out and arrest her.

  • Armek, a White Martian, plummets on National City determined to take M'gann back to Mars to face her retribution as a traitor. Hank and Supergirl decide the best move to keep M'gann safe is to bring her to the DEO.

  • After Livewire seemingly escapes from prison, Supergirl is bent on recapturing her. After coaching Mon-El, Supergirl brings him with her when she sees Livewire attack the NCPD but things go wrong when Mon-El places Supergirl before the people of National City.

  • The title of the episode is a nod to the script Smith wrote for the unproduced movie Superman Lives.

  • Eliza comes to town to spend Thanksgiving with her daughters. Alex determines it's time to come out to her mom; Kara is surprised when Eliza suggests Mon-El has feelings for her, and Winn and James think about telling Kara the truth about the Guardian.

  • The Guardian offers assistance after a parasite alien depletes Supergirl of her power. Mon-El considers accepting a less than desirable new job which makes him question his motives. Alex battles with a new reality.

  • Supergirl has to defeat a ruthless new gang who has been provided with dangerous new alien technology. When Cadmus sends a video to the DEO, the crew discovers Cadmus is the one staffing the criminals for a secret mission.

  • A strike is made on the President as hot-button, alien vs. human rights concerns heat up in National City. Supergirl and the DEO are recruited to protect the President and retrieve the responsible party. Alex pairs up with Detective Maggie Sawyer to examine the case while Kara seeks out a recently escaped Mon-El, who she worries might be the alien behind the assault.

  • CADMUS raids National City with a Kryptonite powered enemy who ends up seriously injuring Supergirl. Superman faults Hank because the Kryptonite was taken from the DEO. Meanwhile, Kara's first day at her new employment doesn't go as hoped after she meets her new boss, Snapper Carr.

  • When a new threat emerges in National City, Kara teams up with her cousin, Clark Kent, to stop it. Kara is thrilled to have family in town but it leaves Alex feeling a bit left out. Meanwhile, Hank and Supergirl are stunned by the pod that came crashing to Earth.

Watch Supergirl Online - Watch online anytime anywhere: Stream, Download, Buy, Rent

Supergirl is currently available to watch free on The CW, FuboTV and stream on The CW. You can also stream, download, buy, rent Supergirl on demand at Netflix, Amazon, Vudu, FandangoNow, Google Play, iTunes online.

Supergirl News

World's First Trans Superhero Coming to 'Supergirl'

The CW series will be breaking new ground in the fall.

'Supergirl' Melissa Benoist Makes Broadway Debut

Turns out that Supergirl can sing, too.

'Supergirl' Showrunner Fired After Sexual Harassment Claims

Andrew Kreisberg was also showrunner for 'The Flash.'

The CW Releases Its Fall Premiere Schedule

The network will debut new episodes of all its series in a single week.

Tyler Hoechlin's Superman Returns to 'Supergirl'

The heroine's cousin will visit National City once again.

'Supergirl' Makes CW Debut

Supergirl has migrated from CBS to The CW for its second season, and that's not the only big event in store for the series this week.

Netflix/CW Deal Includes 'Supergirl' and Other DC Series

A new deal between the two companies keeps the network's series on Netflix and gets episodes to viewers sooner.

New CW Episodes Coming to Netflix?

A possible deal between Netflix and The CW could make new episodes of CW series available on the service not long after they air on the network.

'Teen Wolf' Star to Be 'Supergirl''s Superman

Superman is coming to National City at the beginning of next season, and now we know what he will look like.

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