The Best Episodes of Supergirl

Worlds Finest

#1 - Worlds Finest 8.18

Season 1 - Episode 18

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.

Directors: Nick Gomez
Nevertheless, She Persisted

#2 - Nevertheless, She Persisted 8.07

Season 2 - Episode 22

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

Directors: Glen Winter
Falling

#3 - Falling 7.90

Season 1 - Episode 16

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.

Directors: Larry Teng
Resist

#4 - Resist 7.89

Season 2 - Episode 21

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

Directors: Millicent Shelton
Welcome to Earth

#5 - Welcome to Earth 7.89

Season 2 - Episode 3

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.

Directors: Rachel Talalay
Better Angels

#6 - Better Angels 7.87

Season 1 - Episode 20

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.

Directors: Larry Teng
The Last Children of Krypton

#7 - The Last Children of Krypton 7.85

Season 2 - Episode 2

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.

Directors: Glen Winter
The Adventures of Supergirl

#8 - The Adventures of Supergirl 7.84

Season 2 - Episode 1

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.

Directors: Glen Winter
Hostile Takeover

#9 - Hostile Takeover 7.81

Season 1 - Episode 8

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.

Directors: Karen Gaviola
Survivors

#10 - Survivors 7.79

Season 2 - Episode 4

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.

Directors: James Marshall, James Bamford
Manhunter

#11 - Manhunter 7.79

Season 1 - Episode 17

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.

Directors: Chris Fisher
Medusa (1)

#12 - Medusa (1) 7.79

Season 2 - Episode 8

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. Part 1 - Supergirl - S02E08 Part 2 - The Flash - S03E08 Part 3 - Arrow - S05E08 Part 4 - DC's Legends of Tomorrow - S02E07

Directors: Stefan Pleszczynski
The Darkest Place

#13 - The Darkest Place 7.78

Season 2 - Episode 7

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.

Directors: Glen Winter
City of Lost Children

#14 - City of Lost Children 7.77

Season 2 - Episode 20

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.

Directors: Ben Bray
Exodus

#15 - Exodus 7.77

Season 2 - Episode 15

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.

Directors: Michael A. Allowitz
Changing

#16 - Changing 7.76

Season 2 - Episode 6

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.

Directors: Larry Teng
Alex

#17 - Alex 7.75

Season 2 - Episode 19

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.

Directors: Rob Greenlea
Ace Reporter

#18 - Ace Reporter 7.75

Season 2 - Episode 18

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.

Directors: Armen V. Kevorkian
Crossfire

#19 - Crossfire 7.75

Season 2 - Episode 5

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 her fundraisers.

Directors: Glen Winter
Distant Sun

#20 - Distant Sun 7.73

Season 2 - Episode 17

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.

Directors: Kevin Smith
Luthors

#21 - Luthors 7.72

Season 2 - Episode 12

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.

Directors: Tawnia McKiernan
For the Girl Who Has Everything

#22 - For the Girl Who Has Everything 7.72

Season 1 - Episode 13

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.

Directors: Dermott Downs
Human for a Day

#23 - Human for a Day 7.72

Season 1 - Episode 7

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.

Directors: Larry Teng
Supergirl Lives

#24 - Supergirl Lives 7.71

Season 2 - Episode 9

When Kara investigates the story of a missing woman, she and Mon-El end up being thrust through a portal to another planet where the downtrodden are sold as slaves. The title of the episode is a nod to the script Smith wrote for the unproduced film Superman Lives.

Directors: Kevin Smith
Strange Visitor From Another Planet

#25 - Strange Visitor From Another Planet 7.71

Season 1 - Episode 11

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.

Directors: Glen Winter