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Kara is surprised to find that CatCo has a new owner who has brought in a star reporter. New couples emerge and explore their budding relationships while J’onn J’onzz receives an unexpected visitor.
Stranger Beside Me
Supergirl, Alex and Brainiac thwart an alien attack while William investigates Kara. J’onn J’onzz and Kelly use Obsidian tech to solve a problem.
Kara attempts to mend her relationship with Lena. J’onn J’onzz takes a deep dive into his memories while Kelly tries to help an old friend.
In Plain Sight
Kara’s investigation into William Dey’s “criminal” activities results in the shocking revelation he is not who she thinks. Meanwhile, the conflict between Malefic and J’onn J’onzz reaches a boiling point.
On the eve of the worldwide launch of Andrea Rojas’s VR contact lenses, Kara and William team up on an investigation that exposes a terrorist plot. Kelly and Alex celebrate an anniversary, but Alex’s safety is in jeopardy.
While a new villain is under arrest at the DEO, Supergirl uses him to try and understand who is responsible for the recent attacks. Meanwhile, Andrea and Lena think back on their tumultuous past.
Supergirl finally learns the truth about Lena while tangling with Leviathan. J’onn J’onnz makes a discovery about his brother’s whereabouts.
The Wrath of Rama Khan
Supergirl’s struggle against Leviathan reaches a boiling point as she faces off against Rama Khan. Meanwhile, as Lena and Hope work to launch Project Non Nocere, Hope proves to be an invaluable asset to Lena.
Crisis on Infinite Earths (1)
This episode has no summary.
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 - Part Two
Supergirl helps Winn face his greatest fear. After Alex sets out to find evidence against Lex, Brainy must decide between helping his friend or continuing to secretly work for Lex.
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 did, would things turn out different? Looking back over key moments .. show full overview
Lex tasks Supergirl with protecting Andrea from an anti-tech extremist, but his nefarious purpose goes beyond merely keeping Andrea alive. Meanwhile, Lena moves forward with Non Nocere, with Lex’s help.
Nia’s roommate is attacked by a man targeting Dreamer because he doesn’t like that Dreamer is transgender and wants her to quit being a superhero. Determined to protect her community .. show full overview
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. Kelly helps William investigate Lex. Kara deals with difficult news.
Deus Lex Machina
Lex proceeds to lay an intricate plan to bring Lena closer to him, defeat Leviathan’s latest attack, and pit Supergirl and team against Leviathan. It is also revealed how Lex came into power after Crisis.
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