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The Best Episodes of Supergirl Season 2

Every episode of Supergirl Season 2 ranked from best to worst. Discover the Best Episodes of Supergirl Season 2!

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Episode Rankings

  1. #1 Fan Favorite
    Supergirl Season 2 Episode 1 - The Adventures of Supergirl
    8.2/10(3451 votes)

    S2:E1

    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 leaves Alex feeling a bit left out. Meanwhile, Hank and Supergirl are stunned by the pod that came crashing to Earth.

    Director:Glen Winter
    Writer:Unknown

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  2. Supergirl Season 2 Episode 2 - The Last Children of Krypton
    8.0/10(2687 votes)

    S2:E2

    CADMUS attacks National City with a Kryptonite-powered villain who ends up seriously hurting Supergirl. Superman blames Hank because the Kryptonite was stolen from the DEO. Meanwhile, Kara’s first day at her new job doesn’t go as planned after she meets her new boss, Snapper Carr.

    Director:Glen Winter
    Writers:Caitlin Parrish, Robert Rovner

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  3. Supergirl Season 2 Episode 8 - Medusa (I)
    7.9/10(2925 votes)

    S2:E8

    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 feelings for her, and Winn and James consider telling Kara the truth about the Guardian. Meanwhile, Cadmus unleashes a virus that instantly kills any alien in the vicinity so Kara enlists an unexpected ally – Lena Luthor. The epic superhero crossover kicks off tonight when Barry Allen and Cisco Ramon seek Kara's help with an alien invasion on their Earth. The crossover continues on The Flash S03E08 Invasion! (II), Arrow S05E08 Invasion! (III) and DC's Legends of Tomorrow S02E07 Invasion! (IV).

    Director:Stefan Pleszczynski
    Writers:Derek Simon, Jessica Queller

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  4. Supergirl Season 2 Episode 15 - Exodus
    7.9/10(2348 votes)

    S2:E15

    As Alex searches for Jeremiah and Kara investigates a series of alien kidnappings, the sisters realize they must break the rules to foil a new Cadmus plot. In an effort to get Snapper Carr to run a story that would help her stop Cadmus, Kara agrees to set up an interview between Snapper and Supergirl.

    Director:Michael A. Allowitz
    Writers:Paula Yoo, Eric Carrasco

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  5. Supergirl Season 2 Episode 22 - Nevertheless, She Persisted
    7.9/10(2323 votes)

    S2:E22

    Supergirl challenges Rhea to battle to save National City. Meanwhile, Superman returns and Cat Grant offers Supergirl some sage advice.

    Director:Glen Winter
    Writer:Unknown

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  6. Supergirl Season 2 Episode 12 - Luthors
    7.8/10(2382 votes)

    S2:E12

    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 her friend is guilty and fights to clear Lena’s name. Flashbacks reveal how Lena came to be a Luthor.

    Director:Tawnia McKiernan
    Writers:Cindy Lichtman, Robert Rovner

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  7. Supergirl Season 2 Episode 3 - Welcome to Earth
    7.7/10(2596 votes)

    S2:E3

    An attack is made on the President as hot-button, alien vs. human rights issues heat up in National City. Supergirl and the DEO are assigned to protect the President and bring in the responsible party. Alex teams up with Detective Maggie Sawyer to investigate the case while Kara searches for a recently escaped Mon-El, who she fears may be the alien behind the assault.

    Director:Rachel Talalay
    Writers:Derek Simon, Jessica Queller

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  8. Supergirl Season 2 Episode 6 - Changing
    7.7/10(2571 votes)

    S2:E6

    The Guardian debuts to lend a hand after a parasite alien drains Supergirl of her power. Mon-El considers a less than desirable new career which then leads him to contemplate his motives. Alex struggles with a new reality.

    Director:Larry Teng
    Writer:Unknown

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  9. Supergirl Season 2 Episode 21 - Resist
    7.7/10(2113 votes)

    S2:E21

    Supergirl grapples with whether or not to obey the President's orders regarding Rhea's latest actions. Meanwhile, Cat Grant returns to National City.

    Director:Millicent Shelton
    Writers:Derek Simon, Jessica Queller

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  10. Supergirl Season 2 Episode 4 - Survivors
    7.6/10(2478 votes)

    S2:E4

    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 mortal combat for the entertainment of rich humans. While trying to stop the fighting, Supergirl and Martian Manhunter find themselves up against a surprising opponent. Meanwhile, Hank is thrilled to have found another Martian and tries to get to know M'Gann better. Supergirl takes Mon-El under her wing and begins to train him.

    Director:James Marshall
    Writer:Paula Yoo

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  11. Supergirl Season 2 Episode 7 - The Darkest Places
    7.6/10(2397 votes)

    S2:E7

    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 captured by Cadmus. While fighting to free Mon-El, Supergirl comes face to face with Cyborg Superman.

    Director:Glen Winter
    Writers:Paula Yoo, Robert Rovner

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  12. Supergirl Season 2 Episode 9 - Supergirl Lives
    7.6/10(2333 votes)

    S2:E9

    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 place Izzy was seen and the duo find themselves thrust through a portal to another planet, Slaver's Moon, where the downtrodden are sold as slaves. The leader of the trafficking ring is none other than Roulette. To make matters worse, Slaver's Moon has a red sun, which means Kara and Mon-El are stripped of their powers and stuck on the planet with no way home. Meanwhile, back on Earth, Alex blames herself for Kara's disappearance, fearing she's become too focused on her new relationship with Maggie and too complacent in watching out for her sister.

    Director:Kevin Smith
    Writer:Unknown

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  13. Supergirl Season 2 Episode 19 - Alex
    7.6/10(2126 votes)

    S2:E19

    Alex is kidnapped and the kidnapper threatens to kill her unless Supergirl releases a notorious criminal from prison. Supergirl and Maggie have always had different approaches to apprehending criminals but this time they must work together to save Alex. Meanwhile, Rhea has an interesting proposal for Lena.

    Director:Rob J. Greenlea
    Writer:Eric Carrasco

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  14. Supergirl Season 2 Episode 5 - Crossfire
    7.5/10(2517 votes)

    S2:E5

    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 staffing the criminals for a secret mission. Meanwhile, Kara gets Mon-El a job as an intern at CatCo, James makes an important decision and Lena invites Kara to attend one of her fundraisers.

    Director:Glen Winter
    Writers:Anna Musky-Goldwyn, Gabriel Llanas

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  15. Supergirl Season 2 Episode 11 - The Martian Chronicles
    7.4/10(2143 votes)

    S2:E11

    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 keep M’gann safe is to bring her to the DEO. However, when it is revealed that Armek shape-shifted into M’gann and is now loose in the building, the team realize he could be disguised as any one of them.

    Director:David McWhirter
    Writers:Anna Musky-Goldwyn, Gabriel Llanas

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  16. Supergirl Season 2 Episode 17 - Distant Sun
    7.4/10(2064 votes)

    S2:E17

    A large bounty is put out on Supergirl and aliens from far and near attack National City intent on taking out the woman of steel. Alex and Maggie run into Maggie’s ex-girlfriend, Emily, who is in town for a week. Hank gets an interesting order from President Marsdin.

    Director:Kevin Smith
    Writers:Anna Musky-Goldwyn, Gabriel Llanas

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  17. Supergirl Season 2 Episode 18 - Ace Reporter
    7.4/10(2044 votes)

    S2:E18

    Lena’s ex-boyfriend, Jack Spheer, comes to National City to unveil his big breakthrough in nano-technology, which has the potential to eradicate all diseases. Lena asks Kara to attend Jack’s conference with her for support. When Kara sees Snapper in attendance she’s inspired to tap back into her reporter skills and questions Jack on his discovery, which ultimately leads to a bigger investigation that puts everyone in danger.

    Director:Armen V. Kevorkian
    Writers:Paula Yoo, Caitlin Parrish

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  18. Supergirl Season 2 Episode 13 - Mr. & Mrs. Mxyzptlk
    7.3/10(2441 votes)

    S2:E13

    When Mr. Mxyzptlk, a magical imp, shows up on Earth and declares his love for Kara, she tries to let him down easy, thinking him harmless. However, he decides it’s a challenge and starts to wreak havoc on National City. Mon-El has seen beings like Mr. Mxyzptlk on Daxam and knows how dangerous they can be. He and Kara argue over how to get rid of Mr. Mxyzptlk, further straining their relationship. Meanwhile, Alex and Maggie celebrate their first Valentine’s Day together.

    Director:Stefan Pleszczynski
    Writers:Sterling Gates, Jessica Queller

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  19. Supergirl Season 2 Episode 20 - City of Lost Children
    7.3/10(1954 votes)

    S2:E20

    When an alien attacks National City, Supergirl and the DEO learn the alien is a Phorian, an otherwise peaceful race with telekinetic powers. Guardian gets a lead on the Phorian's address but instead of finding the culprit, he finds a very scared boy named Marcus. Marcus will only trust James so it is up to Guardian to stop the attacks on the city. Rhea's plan escalates.

    Director:Ben Hernandez Bray
    Writer:Unknown

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  20. Supergirl Season 2 Episode 10 - We Can Be Heroes
    7.2/10(2186 votes)

    S2:E10

    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 the NCPD but things go awry when Mon-El puts Supergirl before the citizens of National City. Meanwhile, James decides to come clean with Kara and M’Gann, has a psychic attack and collapses into a coma.

    Director:Rebecca Johnson
    Writers:Caitlin Parrish, Katie Rose Rogers

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  21. Supergirl Season 2 Episode 14 - Homecoming
    7.2/10(2169 votes)

    S2:E14

    When Jeremiah Danvers is rescued from Cadmus, Alex and Kara are thrilled to have their father back. The Danvers arrange a family dinner to celebrate but things go awry when a suspicious Mon-El starts to question Jeremiah about his sudden return.

    Director:Larry Teng
    Writers:Caitlin Parrish, Derek Simon

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  22. Supergirl Season 2 Episode 16 - Star-Crossed (I)
    7.2/10(2192 votes)

    S2:E16

    A new villain comes to National City, putting Supergirl on high alert. Meanwhile, Winn’s girlfriend, Lyra, gets Winn in trouble with the law. Maggie attempts to help Winn but old loyalties get in the way. The Music Meister attacks Supergirl. The crossover continues on The Flash S03E17 Duet (II).

    Director:John Medlen
    Writers:Katie Rose Rogers, Jess Kardos

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Season 2 Ratings Summary

"The Adventures of Supergirl" is the best rated episode of Supergirl season 2. It scored 8.2/10 from 3,451 votes. Directed by Glen Winter and written by Unknown, it aired on October 10, 2016. This episode is rated 0.2 points higher than the second-best, "The Last Children of Krypton".