Seasons & Episodes
Pilot
After 12 years of keeping her powers a secret on Earth, Kara Zor-El, Superman's cousin, decides to finally embrace her s
Stronger Together
When Kara’s attempts to help National City don't go according to plan, she must put aside the doubts that she -- and t
Fight or Flight
Supergirl’s powers are tested when Reactron, one of Superman’s formidable enemies, arrives in National City and targ
Livewire
Kara's Thanksgiving may be ruined when she suspects her foster mother, Dr. Danvers, who is coming to town, disapproves o
How Does She Do It?
Kara’s two identities are stretched thin when Supergirl must protect National City from a series of bombings and Kara
Red Faced
Personal and professional stress get the better of Kara when she goes too far during a training exercise against Red Tor
Human for a Day
Hostile Takeover
Kara goes toe-to-toe with Astra when her aunt challenges Kara’s beliefs about her mother. Also, Cat is threatened with
Blood Bonds
With Astra in captivity at the DEO, her husband, Non, captures Hank, leading to a tense standoff between the two sides.
Childish Things
Kara does her best to support Winn when his father, the supervillain Toyman, breaks out of prison and seeks out his son
Strange Visitor from Another Planet
Kara must help Hank face his painful past when a White Martian, a member of the alien race that wiped out his people, ki
Bizarro
Kara faces off against her mirror image when Bizarro, a twisted version of Supergirl, sets out to destroy her. Also, Kar
For The Girl Who Has Everything
Kara’s friends must find a way to save her life when a parasitic alien attaches itself to her and traps her in a dream
Truth, Justice and the American Way
Supergirl does battle with the deadly Master Jailer, who is hunting and executing escaped Fort Rozz prisoners. Also, Cat
Solitude
Kara travels to Superman’s Fortress of Solitude in hopes of learning how to defeat Indigo, a dangerous being who can t
Falling
Kara turns on her friends and the citizens of National City after being exposed to Red Kryptonite makes her malicious an
Manhunter
J'onn J'onzz reveals the details of meeting Kara and Alex's father, Dr. Jeremiah Danvers, and assuming Hank Henshaw's i
Worlds Finest
Kara gains a new ally when the lightning-fast superhero The Flash suddenly appears from an alternate universe and helps
Myriad
Kara must find a way to free her friends when Non and Indigo use mind control to turn National City’s citizens into th
Better Angels
Supergirl is forced to do battle with an unexpected foe and must risk everything – including her life – to prevent N
The Adventures of Supergirl
When a new threat emerges in National City, Kara/Supergirl teams up with her cousin, Clark Kent/Superman, to stop it. Ka
The Last Children of Krypton
CADMUS attacks National City with a Kryptonite-powered villain who ends up seriously hurting Supergirl. Superman blames
Welcome to Earth
An attack is made on the President as hot-button, alien vs. human rights issues heat up in National City. Supergirl and
Survivors
When Kara and Alex investigate the murder of an unregistered alien, the trail leads to an alien fight club run by Roulet
Crossfire
Supergirl must beat a ruthless new gang who has been armed with dangerous new alien technology. When Cadmus sends a vide
Changing
The Guardian debuts to lend a hand after a parasite alien drains Supergirl of her power. Mon-El considers a less than de
The Darkest Places
While Guardian tries to clear his name after being accused of a murder committed by another vigilante, Supergirl heads o
Medusa (I)
Eliza comes to town to celebrate Thanksgiving with her daughters. Alex decides it’s time to come out to her mother; Ka
Supergirl Lives
Kara is moved by the story of a missing woman named Izzy and decides to investigate despite Snapper Carr's order to leav
We Can Be Heroes
After Livewire seemingly breaks out of prison, Supergirl is intent on recapturing her. After training Mon-El, Supergirl
The Martian Chronicles
Armek, a White Martian, descends on National City intent on taking M’gann back to Mars to face her punishment as a tra
Luthors
After Metallo breaks out of prison and frees Lillian Luthor, the police blame Lena for his escape and arrest her. Despit
Mr. & Mrs. Mxyzptlk
When Mr. Mxyzptlk, a magical imp, shows up on Earth and declares his love for Kara, she tries to let him down easy, thin
Homecoming
When Jeremiah Danvers is rescued from Cadmus, Alex and Kara are thrilled to have their father back. The Danvers arrange
Exodus
As Alex searches for Jeremiah and Kara investigates a series of alien kidnappings, the sisters realize they must break t
Star-Crossed (I)
A new villain comes to National City, putting Supergirl on high alert. Meanwhile, Winn’s girlfriend, Lyra, gets Winn i
Distant Sun
A large bounty is put out on Supergirl and aliens from far and near attack National City intent on taking out the woman
Ace Reporter
Lena’s ex-boyfriend, Jack Spheer, comes to National City to unveil his big breakthrough in nano-technology, which has
Alex
Alex is kidnapped and the kidnapper threatens to kill her unless Supergirl releases a notorious criminal from prison. Su
City of Lost Children
When an alien attacks National City, Supergirl and the DEO learn the alien is a Phorian, an otherwise peaceful race with
Resist
Supergirl grapples with whether or not to obey the President's orders regarding Rhea's latest actions. Meanwhile, Cat Gr
Nevertheless, She Persisted
Supergirl challenges Rhea to battle to save National City. Meanwhile, Superman returns and Cat Grant offers Supergirl so
Girl of Steel
Kara deals with the loss of Mon-El by focusing all her energy on being Supergirl and the mysterious new threat against N
Triggers
Psi, a thief with psychic powers, attacks National City. Able to immobilize people by tapping into their worst fears, Ps
Far From the Tree
Eliza throws Alex and Maggie a wedding shower, which causes Maggie to reach out to her estranged father. Supergirl joins
The Faithful
Kara investigates a secretive new group whose leader, Thomas Coville, has a mysterious connection to Supergirl. Meanwhil
Damage
When multiple children get sick from lead poisoning, Morgan Edge points the finger at Lena and blames her creation of th
Midvale
Kara and Alex head home to Midvale for a little R&R. While there, Kara recalls a painful memory of a childhood friend's
Wake Up
When Winn and the team discover an alien ship has crash landed deep underwater beneath National City, Kara/Supergirl is
Crisis on Earth-X (I)
Barry and Iris’s wedding brings the gang together, but things go awry when villains from Earth-X attack the ceremony.
Reign
Supergirl investigates a mysterious symbol popping up all over National City, tracing its origins back to an ancient pro
Legion of Superheroes
Struggling to heal from her injuries inflicted by Reign, Supergirl remains in a dreamlike state, unable to be reached. M
Fort Rozz
As Reign continues to terrorize the city, Supergirl teams up with Saturn Girl, and the two recruit Supergirl’s former
For Good
Someone tries to kill Morgan Edge and he barely survives. He accuses Lena of being behind the attempt and vows to destro
Both Sides Now
The DEO captures a second Worldkiller, Purity. Supergirl and Alex use very different methods of interrogation with Purit
Schott Through the Heart
When Winn’s father dies, his estranged mother, Mary, reappears trying to reconnect and to explain why she abandoned hi
In Search of Lost Time
Myr'nn inadvertently causes psychic disturbances at the DEO; Supergirl must work with J'onn to contain the chaos; Mon-El
Of Two Minds
Supergirl and Imra have different ideas on how to stop the third Worldkiller, Pestilence. However, when both Alex and Wi
Trinity
Still reeling after learning about Lena’s secret, Supergirl asks Guardian for a favor that could alter his relationshi
Shelter from the Storm
When Reign starts hunting Ruby, Supergirl and Alex work together to keep her safe. Supergirl and J'onn look to Sam’s m
The Fanatical
When Tanya, a disciple of Coville's, escapes from what's left of his cult, she gives Kara and James a journal that could
Dark Side of the Moon
Supergirl is stunned to discover that a part of Krypton survived. Meanwhile, Alex is attacked while out with Ruby, and L
Not Kansas
Kara makes a major life decision. Meanwhile, J'onn finds out that special DEO-caliber guns have hit the streets of Natio
Make It Reign
Supergirl learns the true depth of Selena's nefarious plans for Earth. Supergirl, Mon-El and Alura must devise a plan to
Battles Lost and Won
Supergirl and team take on Selena in an epic battle for Earth.
American Alien
Diving back into reporting, Kara welcomes a new cub reporter to CatCo. Meanwhile, James and Lena argue about James’ im
Fallout
A shocking revelation causes chaos in National City. Supergirl sets out to capture Mercy Graves, while Alex takes contro
Man of Steel
Ben Lockwood didn't always hate aliens. Through a series of incidents, and input from his anti-alien father, Ben slowly
Ahimsa
When Supergirl needs help, Alex asks Lena and Brainiac to team up. Meanwhile, J’onn questions his decision to quit the
Parasite Lost
Colonel Haley makes a surprising decision regarding Supergirl. Kara writes a series of articles highlighting aliens in N
Call to Action
Everyone gathers for Thanksgiving but Kara is feeling down after her televised debate with Ben Lockwood about the anti-a
Rather the Fallen Angel
James falls in deeper with the Children of Liberty in his efforts to meet Agent Liberty. Meanwhile, Supergirl and Manche
Bunker Hill
Nia has a powerful dream about Agent Liberty but refuses to look at it as a prophetic dream and pushes it aside. After n
Elseworlds (III)
Supergirl, The Flash, Green Arrow and Superman engage in the battle of their lives. The crossover starts on The Flash S
Suspicious Minds
Colonel Haley is upset after Supergirl responds to a distress call from a Navy ship that turned out to be a deadly alien
Blood Memory
Kara joins Nia on a trip to Nia's hometown to visit her family during the town's annual Harvest Festival. While home, Ni
Menagerie
With his P.I. shingle newly hung outside his office, J'onn welcomes new clients. Trying to take her mind off what happen
What's So Funny About Truth, Justice, and the American Way?
Manchester Black breaks out of prison with the help of his new team, The Elite, who are set on punishing the anti-alien
Stand and Deliver
Between Ben Lockwood’s new push to stir up the anti-alien movement and the Elite’s desire to target Lockwood and his
O Brother, Where Art Thou?
Secretly furloughed from prison due to failing health, Lex Luthor visits his sister, Lena, to seek her help finding a cu
The House of L
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 sec
All About Eve
Supergirl must deal with the destructive aftermath of Lex's nefarious plans. Shocked at what Lex has created, Supergirl
Crime and Punishment
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
American Dreamer
As Kara doggedly works as a reporter to clear Supergirl's name, Dreamer picks up the slack as National City's protector,
Will The Real Miss Tessmacher Please Stand Up?
Kara and Lena head to Kaznia to hunt down Lex. However, Eve Tessmacher sets a trap for the duo that could ultimately rev
Red Dawn
Kara comes face to face with Red Daughter and the two engage in an epic battle. Determined to find a way to extract the
The Quest for Peace
Lex Luthor descends upon Washington, DC and summons Lena and Lillian Luthor to the White House. Supergirl realizes she h
Event Horizon
Kara is surprised to find that CatCo has a new owner who has brought in a star reporter. New couples emerge and explore
Stranger Beside Me
Supergirl, Alex, and Brainiac thwart an alien attack while William investigates Kara. J'onn J'onzz and Kelly use Obsidia
Blurred Lines
Kara attempts to mend her relationship with Lena. J’onn J’onzz takes a deep dive into his memories while Kelly trie
In Plain Sight
Kara's investigation into William Dey's "criminal" activities results in the shocking revelation he is not who she think
Dangerous Liaisons
On the eve of the worldwide launch of Andrea Rojas's VR contact lenses, Kara and William team up on an investigation tha
Confidence Women
While a new villain is under arrest at the DEO, Supergirl uses him to try and understand who is responsible for the rece
Tremors
Supergirl finally learns the truth about Lena while tangling with Leviathan. J'onn J'onn makes a discovery about his bro
The Wrath of Rama Khan
Supergirl's struggle against Leviathan reaches a boiling point as she faces off against Rama Khan. Meanwhile, as Lena an
Crisis on Infinite Earths: Part One (I)
The Monitor sends Harbinger to gather the worlds’ greatest heroes - Supergirl, The Flash, Green Arrow, Batwoman, White
The Bottle Episode
The subsequent complications from the Crisis leave Supergirl to face a chaotic threat.
Back from the Future (1)
As Supergirl tries to thwart a Toyman copycat, Winn Schott returns from the future.
Back from the Future (2)
Supergirl helps Winn face his greatest fear. After Alex sets out to find evidence against Lex, Brainy must decide betwee
It's a Super Life
Mxyzptlk returns with a proposition for Kara – what if she could go back in time and tell Lena her secret before Lex d
The Bodyguard
Lex tasks Supergirl with protecting Andrea from an anti-tech extremist, but his nefarious purpose goes beyond merely kee
Reality Bytes
Nia’s roommate, Yvette, is attacked by a man targeting Dreamer because he doesn’t like that Dreamer is transgender a
Alex in Wonderland
Alex uses a pair of Obsidian contact lenses to visit a virtual National City where she takes on a whole new persona. Mea
Deus Lex Machina
Lex proceeds to lay an intricate plan to bring Lena closer to him, defeat Leviathan’s latest attack, and pit Supergirl
The Missing Link
Supergirl and the team go head to head against Rama Khan and Leviathan. Meanwhile, Lena and Lex must join forces when Pr
Immortal Kombat
Supergirl realizes that in order to stop Lex and Leviathan she must work with the one person she never thought she’d t
Rebirth
As Brainiac lays close to death after trying to stop Lex, Supergirl and team soar in to save him, engaging in an epic ba
A Few Good Women
As the stakes with Lex are raised higher than ever before, Lena must decide how far she is willing to go to stop her bro
Phantom Menaces
Supergirl makes a new ally. Lena and Lex battle for control of Luthor Corp.
Lost Souls
Supergirl finds an opportunity to escape from the Phantom Zone but it comes with some dangerous strings attached. Meanwh
Prom Night! (1)
Nia and Brainy attempt to save Supergirl from the Phantom Zone by time traveling back to Kara's home in 2009. While dete
Prom Again! (2)
Part two of the flashback episodes pick up where things left off - Young Kara experiences kryptonite for the first time,
Fear Knot
As the Super Friends brave the Phantom Zone to bring Supergirl home, each member of the team is confronted by visions of
Welcome Back, Kara
As Supergirl and Zor-El make their return to National City, they are determined to keep the Phantom Zone behind them and
Dream Weaver
Kelly meets Joey, a young orphaned alien boy, who is acting out in foster care because he fears there is something wrong
Still I Rise
Supergirl intervenes when a building in the Heights that was set aside for low income housing is suddenly at risk to be
Mxy in the Middle
Supergirl and team must stop Nyxly from vanquishing a familiar face from Supergirl's past - Mr. Mxyzptlk. Mxy returns an
Blind Spots
Kelly is horrified when the Ormfell building implodes, injuring many in the community, including Joey. However, her horr
The Gauntlet
Supergirl and team race Nyxly for control of a magical totem that controls courage. Supergirl and Nyxly battle and each
Magical Thinking
Lena is uncertain about using her magical abilities to help Supergirl retrieve the second totem from Nyxly. William stru
Hope for Tomorrow
Supergirl continues to fight Nyxly for the remaining totems but after Nyxly kidnaps William, Supergirl realizes she need
Nightmare in National City
Kara lands her dream story for Catco but when the city is suddenly attacked by a nightmare monster at the same time as h
I Believe in a Thing Called Love
When Lex Luthor appears by Nyxly's side, Supergirl and team must deal with the emotional fallout of facing their two big
Truth or Consequences
Supergirl is determined to keep everyone safe from Lex and Nyxly so she doubles down on patrol, especially as Alex and K
The Last Gauntlet
Supergirl and the super friends take drastic action after a loved one is kidnapped by Nyxly and Lex. An unlikely ally st
Kara
Supergirl is joined by familiar faces from the past to help her stop Lex and Nyxly for good. Meanwhile, Alex and Kelly p
