Rebirth
Series 6, Episode 1 M
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As Brainiac lays close to death after trying to stop Lex, Supergirl and team soar in to save him; Lena enlists the entire team to help stop her brother.
A Few Good Women
Series 6, Episode 2 M
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As the stakes with Lex are raised higher than ever before, Lena must decide how far she is willing to go to stop her brother. Meanwhile, Supergirl and the team are faced with a challenge unlike anything they’ve ever deal with before, and it brings Alex to her breaking point.
Phantom Menaces
Series 6, Episode 3 M
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While Lena and Lex battle for control of Luthor Corp, Supergirl makes a new ally.
Lost Souls
Series 6, Episode 4 M
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Supergirl finds an opportunity to escape from the Phantom Zone, but it comes with some dangerous strings attached. Meanwhile, Lena joins the Super Friends on a mission but finds she disagrees with their plan of action against the Phantoms and wonders if she is truly ready to be a part of the team.
Prom Night
Series 6, Episode 5 M
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Nia and Brainy travel back in time to save Supergirl from the Phantom Zone, but when their ship crashes on the scene, they meet a young Kara and a young Cat Grant (ELIZA HELM).
Prom Again!
Series 6, Episode 6 M
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Part Two of the flashback episodes pick up where things left off – Young Kara experiences Kryptonite for the first time; Nia and Brainy are trapped by invading aliens; and a young Cat Grant may be the reason Supergirl never gets out of the Phantom Zone. Series star Chyler Leigh makes her directorial debut.
Fear Knot
Series 6, Episode 7 M
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As the Super Friends brave the Phantom Zone to bring Supergirl home, the members of the team are confronted by visions of their worst fears.
Welcome Back, Kara!
Series 6, Episode 8 M
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As Supergirl and Zor-El (recurring guest star JASON BEHR) make their return to National City, they are determined to keep the Phantom Zone behind them and enjoy being superheroes together. Unfortunately, their overzealous efforts backfire, creating a whole new threat to National City in the midseason premiere.
Dream Weaver
Series 6, Episode 9 M
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Kelly meets a young, orphaned alien boy, Joey (guest star AIDEN STOXX), who is acting out in foster care because he fears there is something wrong with his incarcerated brother Orlando (guest star JHALEIL SWABY). Kelly asks Kara to help her investigate and they stumble upon abuse at the prison. Meanwhile, Nyxly (new series regular PETA SERGEANT) crashes one of Nia’s dreams and asks her for help.
Still I Rise
Series 6, Episode 10 M
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When a building in the Heights that was set aside for low-income housing is suddenly at risk to be sold to a major corporation, Supergirl recruits Orlando to help her win over the city, but things go awry when Nyxly shows up. Meanwhile, Nia trains with her mother (guest star KATE BURTON).
Mxy in the Middle
Series 6, Episode 11 M
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Supergirl and team must stop Nyxly from vanquishing a familiar face from Supergirl’s past – Mr. Mxyzptlk (guest star THOMAS LENNON). Mxy returns and explains Nyxly’s dark history to the super team in the best way he knows how – in song form! Meanwhile, Lena visits her mother’s birthplace in Ireland, eager to dig into her past but is shocked by the small town’s icy reception towards her.
Blind Spots
Series 6, Episode 12 M
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When disaster strikes and Supergirl is busy, Kelly embraces her power and steps into her role as Guardian to lead the way and restore justice to her fallen community.
The Gauntlet
Series 6, Episode 13 M
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Supergirl and the team race Nyxly for control of a magical totem that controls courage. Supergirl and Nyxly battle and each get a piece of the totem, but learn the first person to pass the test of courage will gain control of the entire thing. Meanwhile, Lena is still struggling to make sense of her newfound gift.
Magical Thinking
Series 6, Episode 14 M
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Lena is uncertain about using her magical abilities to help Supergirl retrieve the second totem from Nyxly. William struggles to write a story on the Super Friends that makes both the heroes and Andrea happy. Meanwhile, Kelly is thrilled Esme (guest star MILA JONES) has found a new home, but things go awry and the little girl’s future is put in danger.
Hope for Tomorrow
Series 6, Episode 15 M
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Supergirl continues to fight Nyxly for the remaining totems but after Nyxly kidnaps William, Supergirl realizes she needs to take a more proactive stance to keep National City safe. Meanwhile, Alex faces the biggest challenge of her life.
A Nightmare in National City
Series 6, Episode 16 M
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With a nightmare monster in National City, Dreamer goes in search of the Dream Totem, but needs to ask her sister (HANNAH JAMES) for help.
Believe in a Thing Called Love
Series 6, Episode 17 M
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When Lex Luthor appears by Nyxly’s side, Supergirl and the team must deal with the emotional fallout of facing their two biggest foes at the same time. Meanwhile, Alex makes plans for the perfect proposal to Kelly, but work keeps getting in the way.
Truth or Consequences
Series 6, Episode 18 M
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Determined to keep everyone safe from Lex and Nyxly, Supergirl doubles down on patrol, especially as Alex and Kelly’s bachelorette party is coming up. Meanwhile, Alex is torn between duty and finally allowing herself the time to enjoy her new family. Lastly, Brainy receives heartbreaking news, and William clashes with Andrea over her recent coverage of Lex.
The Last Gauntlet
Series 6, Episode 19 M
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In the penultimate buildup to the season finale, Supergirl and her friends take drastic action after a loved one is kidnapped by Nyxly and Lex. An unlikely ally steps in to help the team.
Kara
Series 6, Episode 20 M
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In the epic series finale, Supergirl is joined by familiar faces from the past to help her stop Lex and Nyxly for good. Meanwhile, Alex and Kelly prepare to walk down the aisle.