After Metallo breaks out of prison and frees Lillian Luthor, the police blame Lena for his escape and arrest her. Despite overwhelming evidence, Kara refuses to believe h ...

Armek, a White Martian, descends on National City intent on taking M'gann back to Mars to face her punishment as a traitor. Hank and Supergirl determine the best way to k ...

After Livewire seemingly breaks out of prison, Supergirl is intent on recapturing her. After training Mon-El, Supergirl takes him with her when she sees Livewire attack t ...

Kara is moved by the story of a missing woman named Izzy and decides to investigate despite Snapper Carr's order to leave it alone. Kara takes Mon-El with her to the last ...

Eliza comes to town to celebrate Thanksgiving with her daughters. Alex decides it's time to come out to her mother; Kara is shocked when Eliza suggests Mon-El has feeling ...

While Guardian tries to clear his name after being accused of a murder committed by another vigilante, Supergirl heads out on a solo mission to rescue Mon-El who has been ...

The Guardian arrives to lend a hand when an alien parasite drains Supergirl of her power. Mon-El contemplates his motives when he considers a new career. Alex faces a new ...

Supergirl must beat a ruthless new gang who has been armed with dangerous new alien technology. When Cadmus sends a video to the DEO, the team realizes Cadmus is the one ...

When Kara and Alex investigate the murder of an unregistered alien, the trail leads to an alien fight club run by Roulette, the ringmaster who commands aliens to fight in ...

When the President arrives to sign an order giving amnesty to aliens. At the DEO, the man who arrived in the craft, awakens and has powers like Supergirl and leaves. Kara ...

Supergirl is hurt by a kryptonite-powered villain sent by Cadmus to attack National City. Superman blames Hank since the kryptonite was stolen from the DEO. In the meanti ...

When a new threat emerges in National City, Kara/Supergirl teams up with her cousin, Clark Kent/Superman, to stop it. Kara is thrilled to have family in town but it leave ...

Supergirl is forced to do battle with an unexpected enemy as she risks everything - including her life - to stop Non and Indigo from destroying everyone on Earth. ...

Non activates Myriad which turns all humans in National City to mindless zombies under his control. Supergirl is all alone and discover two people who are not affected. S ...

When former CatCo employee, Siobahn Smythe upset at how her life is going discovers something odd about herself. She then goes to a relative who tells her of their family ...

J'onn J'onzz reveals how he met Jeremiah Danvers and assumed the identity of Hank Henshaw. ...

Red Kryptonite makes Kara malicious and dangerous while Cat appears on The Talk (2010) to discuss Supergirl. ...

Kara travels to the Fortress of Solitude hoping to find information on how to defeat Indigo, a being from her past who can travel through the Internet. In the meantime, J ...

Kara battles the Master Jailer while dealing with a second assistant at CatCo and disagreeing with James over the DEO's methods. ...

A parasitic alien attaches itself to Kara and traps her in a world where Krypton was never destroyed, leaving Alex, Hank and the DEO to fend off a Kryptonian attack witho ...

Kara must deal with a twisted version of Supergirl, while venturing into a possible romance. ...

A Senator who opposes alien presence on Earth comes to National City to speak. And it's while she's speaking that an alien appears and grabs her. That's when the DEO show ...

Kara does her best to support Winn when he hears that his father Winslow Schott Sr. breaks out of prison. His father looks for Winn for a reason to become like him. Cat o ...

The confrontation between the DEO and Astra's forces at Lord Enterprises ends with Hank being taken. General Lane shows to take control of the DEO in Hank's absence. Kara ...

Kara must face her evil aunt Astra when she threatens the safety of National City and challenges Kara's beliefs about her mother while Cat must also face her own problems ...

Kara and her friends are forced to rely on their inner strength and courage when an earthquake strikes National City, while Alex's mistrust of Hank reaches its breaking p ...

Stress makes Kara go too far during a training exercise against a military cyborg commissioned by General Sam Lane, while Cat's mother comes to visit and Winn helps Alex ...

Kara must protect National City from a series of bombings and babysit Cat's son, while James is visited by Lucy Lane. ...

Kara's foster mother visits for Thanksgiving, while an accident transforms a volatile CatCo employee into Livewire. ...

Supergirl's powers are put to the test when one of Superman's most formidable enemies, Reactron, shows up in National City to take her down. In the meantime, Cat makes pl ...

Kara must put doubts aside as she tries to apprehend an escapee from the Kryptonian prison; Cat pressures James for an interview with Supergirl. ...

Twenty-four-year-old Kara Zor-El, cousin of Superman, who was taken in by the Danvers family when she was 13 after being sent away from Krypton, must learn to embrace her ...