Series overview
Season 123456
"I'm not giving up. But my mother didn't send me to Earth to fall in love with a human, have children, live in a house with a white picket fence. She sent me here to protect Kal-El. And now, I will use my powers to protect the Earth."
Kara Danvers[src]

The first season of Supergirl​ premiered on October 26, 2015 on CBS and concluded on April 18, 2016. The season consisted of 20 episodes.



Main cast

Recurring cast


# Episode name Directed by Story by Teleplay by Original airdate
1 "Pilot" Glen Winter Greg Berlanti
Andrew Kreisberg
Ali Adler
October 26, 2015
After 10 years of keeping her powers a secret on Earth, Kara Zor-El, Superman's cousin, decides to finally embrace her superhuman abilities and be the hero she was always meant to be.
2 "Stronger Together" Glen Winter Greg Berlanti & Andrew Kreisberg Andrew Kreisberg & Ali Adler November 2, 2015
When Kara's attempts to help National City don't go according to plan, she must put aside the doubts that she – and the city's media – has about her abilities in order to capture an escapee from the Kryptonian prison, Fort Rozz (prison). Also, Cat pressures James to use his connection to Superman to get her an interview with Supergirl.
3 "Fight or Flight" Dermott Downs Michael Grassi & Rachel Shukert November 9, 2015
Supergirl's powers are tested when Reactron, one of Superman's formidable enemies, arrives in National City and targets the young hero. Also, Cat plans to run an exposé on Supergirl.
4 "Livewire" Kevin Tancharoen Roberto Aguirre-Sacasa & Caitlin Parrish November 16, 2015
Kara's Thanksgiving may be ruined when she suspects her foster mother, Dr. Danvers, who is coming to town, disapproves of her new role as a superhero. Also, when an accident transforms a volatile CatCo employee into the villainous Livewire, she targets Cat and Supergirl.
5 "How Does She Do It?" Thor Freudenthal Yahlin Chang & Ted Sullivan November 23, 2015
Kara's two identities are stretched thin when Supergirl must protect National City from a series of bombings and Kara is tasked with babysitting Cat's son, Carter. Also, James is conflicted when his ex-girlfriend Lucy Lane seeks to rekindle their relationship.
6 "Red Faced" Jesse Warn Michael Grassi & Rachel Shukert November 30, 2015
Personal and professional stress get the better of Kara when she goes too far during a training exercise against Red Tornado, a military cyborg commissioned by Lucy Lane's father, General Sam Lane. Also, Cat's tough exterior is shaken by a visit from her judgmental mother, Katherine, and Alex enlists Winn to look into her father's mysterious death.
7 "Human For a Day" Larry Teng Yahlin Chang & Ted Sullivan December 7, 2015
Kara and her friends must rely on their inner strength and courage when an earthquake strikes National City. Also, Alex's mistrust of Hank reaches a breaking point when the earthquake traps them in the DEO with Jemm, a powerful alien escapee.
8 "Hostile Takeover" Karen Gaviola Roberto Aguirre-Sacasa & Caitlin Parrish December 14, 2015
Kara goes toe-to-toe with Astra when her aunt challenges Kara's beliefs about her mother. Also, Cat is threatened with being removed as the CEO of CatCo after a hacker exposes her private and damaging emails.
9 "Blood Bonds" Steve Shill Ted Sullivan & Derek Simon January 4, 2016
With Astra in captivity at the D.E.O. , her husband, Non, captures Hank, leading to a tense standoff between the two sides. Also, Kara continues to refute Cat's allegations that she is Supergirl.
10 "Childish Things" Jamie Babbit Yahlin Chang Anna Musky-Goldwyn & James DeWille January 18, 2016
Kara does her best to support Winn when his father, the supervillain Toyman, breaks out of prison and seeks out his son for unknown reasons. Also, Cat offers Lucy a job at CatCo and Alex asks Hank to use his powers to help uncover Maxwell Lord's plans.
11 "Strange Visitor From Another Planet" Glen Winter Michael Grassi & Caitlin Parrish January 25, 2016
Kara must help Hank face his painful past when a White Martian, a member of the alien race that wiped out his people, kidnaps Senator Miranda Crane, an anti-alien politician. Also, Cat's estranged son, Adam, arrives in National City.
12 "Bizarro" John Showalter Roberto Aguirre-Sacasa & Rachel Shukert February 1, 2016
Kara faces off against her mirror image when Bizarro, a twisted version of Supergirl, sets out to destroy her. Also, Kara grows closer with Cat's son, Adam.
13 "For the Girl Who Has Everything" Dermott Downs Andrew Kreisberg Ted Sullivan & Derek Simon February 8, 2016
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 world where her family is alive and her home planet was never destroyed. Also, Alex, Hank and the DEO must fend off a Kryptonian attack while Kara is out of commission.
14 "Truth, Justice and the American Way" Lexi Alexander Michael Grassi Yahlin Chang & Caitlin Parrish February 22, 2016
Supergirl does battle with the deadly Master Jailer, who is hunting and executing escaped Fort Rozz (prison) prisoners. Also, Cat hires a second assistant, Siobhan Smythe, who immediately tries to one-up Kara, and Kara and James disagree over the DEO's methods.
15 "Solitude" Dermott Downs Anna Musky-Goldwyn & James DeWille February 29, 2016
Kara travels to Superman's Fortress of Solitude in hopes of learning how to defeat Indigo, a dangerous being who can transport via the Internet and who has a connection to Kara's past. Also, James's relationship with Lucy reaches a crossroads.
16 "Falling" Larry Teng Robert Rovner & Jessica Queller March 14, 2016
Kara turns on her friends and the citizens of National City after being exposed to Red Kryptonite makes her malicious and dangerous. Also, Cat appears on THE TALK to discuss Supergirl.
17 "Manhunter" Chris Fisher Derek Simon Rachel Shukert & Cindy Lichtman March 21, 2016
J'onn J'onzz reveals the details of meeting Kara and Alex's father, Dr. Jeremiah Danvers, and assuming Hank Henshaw's identity. Also, Kara debates trusting someone new with her secret identity and Siobhan plots against Kara.
18 "Worlds Finest" Nick Gomez Greg Berlanti Andrew Kreisberg & Michael Grassi March 28, 2016
Kara gains a new ally when the lightning-fast superhero The Flash suddenly appears from an alternate universe and helps Kara battle Siobhan, aka Silver Banshee, and Livewire in exchange for her help in finding a way to return him home.
19 "Myriad" Adam Kane Yahlin Chang & Caitlin Parrish April 11, 2016
Kara must find a way to free her friends when Non and Indigo use mind control to turn National City's citizens into their own army.
20 "Better Angels" Larry Teng Andrew Kreisberg & Ali Adler Robert Rovner & Jessica Queller April 18, 2016
Supergirl is forced to do battle with an unexpected foe and must risk everything – including her life – to prevent Non and Indigo from destroying every person on the planet


  • This was the shortest season of Supergirl, with 20 episodes, until Season 5 broke it with 19 episodes.
  • This is the only season of Supergirl to air on CBS.


Title cards

Promotional images

Character portraits



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