Watch Supergirl Season 1 Online
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On Supergirl Season 1 Episode 20, Kara must risk her life in order to stop Non from destroying every person on the planet in the season finale.
On Supergirl Season 1 Episode 19, Kara must figure out how to stop Non when he and Indigo use mind control to turn National City's citizens into his own army.
On Supergirl Season 1 Episode 18, Kara gains a new ally when The Flash suddenly appears from an alternate universe and helps Kara battle Silver Banshee and Livewire.
On Supergirl Season 1 Episode 17, J'onn J'onzz reveals the details of meeting Alex and Kara's father, Dr. Jeremiah Danvers, and assuming Hank Henshaw's identity.
On Supergirl Season 1 Episode 16, Kara ends up turning on her friends and the residents of the city after she is exposed to red kryptonite.
On Supergirl Season 1 Episode 15, Kara must visit Superman's Fortress of Solitude when she does battle with a living supercomputer named Indigo.
On Supergirl Season 1 Episode 14, a deadly Master Jailer is hunting and executing escaped Fort Rozz prisoners while Kara and James argue over the DEO's methods.
On Supergirl Season 1 Episode 13, a parasitic alien traps Kara in a dream world where she believes her family is still alive and her planet was never destroyed.
On Supergirl Season 1 Episode 12, a twisted look-a-like of Supergirl sets out to destroy National City while Kara gets closer to Cat's son, Adam.
On Supergirl Season 1 Episode 11, Kara tries to help when a White Martian, the alien race that wiped out Hank's people, kidnaps an anti-alien Senator.
On Supergirl Season 1 Episode 10, Kara tries to be there for Winn when his father, the evil Toyman, breaks out of prison and Cat offers Lucy a job at CatCo.
On Supergirl Season 1 Episode 9, Kara refutes Cat's belief that she is Supergirl while handing a standoff with Astra's husband who has abducted Hank.
On Supergirl Season 1 Episode 8, Cat may lose her position as CEO after a hacker invades her e-mail and Kara faces off with Astra concerning her mother.
On Supergirl Season 1 Episode 7, when an earthquake rocks National City, Kara and her friends must rely on their inner strength and courage.
Personal and professional stress gets to Kara during a training exercise against Red Tornado, a military cyborg on a brand new episode of Supergirl.
While Kara is babysitting Cat's son, National City is rocked by a series of bombings in which it needs Supergirl on a brand new episode of Supergirl.
On Supergirl Seaosn 1 Episode 4, Kara worries that Thanksgiving will be ruined when she thinks her foster mom, Dr. Danvers, disapproves of her new role.
On Supergirl Season 1 Episode 3, Reactron, one of Superman's formidable enemies, arrives and targets Supergirl while Cat plans to run an exposé.
On Supergirl Season 1 Episode 2, a threat to National City forces Kara to cast her doubts aside in order to capture an escapee from the Kryptonian prison Fort Rozz.
On Supergirl Season 1 Episode 1 Superman's cousin, Kara Zor-El, after keeping her powers a secret on Earth, decides to finally embrace her superhuman abilities.