22 Episodes 2016 - 2017
Season 2 finds Supergirl, Kara Zor-El (Melissa Benoist), teaming up with her cousin Superman (Tyler Hoechlin). Kara and James (Mehcad Brooks) decide they're better off as friends, leaving the path for Mon-El (Chris Wood), the mystery alien from the pod that fell in Season 1, open to make a move on the Girl of Steel. Elsewhere, with the help of Maggie (Floriana Lima), Alex (Chyler Lee) accepts her sexuality; at the same time, Lena Luthor (Katie McGrath) rethinks her family loyalties. Episode 8 begins a crossover event with the CW sister shows "The Flash", "Arrow" and "DC's Legend's of Tomorrow," in which Supergirl is featured prominently.
The Adventures of Supergirl
Mon, Oct 10, 2016 60 mins
In the Season 2 premiere, Supergirl's famous cousin arrives on the scene to help her deal with a new threat to the citizens of National City. While having Clark Kent around is a thrill for Kara, their family reunion leaves Alex feeling a bit left out. Meanwhile, Cat Grant encourages her young protégé to make a bold decision in both her personal and professional lives; and Hank and Supergirl are stunned by the alien pod that crashed to Earth.
The Last Children of Krypton
Mon, Oct 17, 2016 60 mins
Supergirl ends up seriously injured during an attack on National City by a kryptonite-powered villain; and Superman puts the blame for his cousin getting hurt on 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.
Welcome to Earth
Mon, Oct 24, 2016 60 mins
Kara fears the recently escaped Mon-El is behind an attack on the president, who Supergirl and the DEO have been assigned to protect; at the same time, the hot-button issue of aliens vs. human rights divides National City.
Mon, Oct 31, 2016 60 mins
Thrilled to have found another Martian, Hank is determined to get to know M'Gann better; Kara and Alex take notice of an alien fight club run by Roulette while investigating an unregistered alien's murder; and Supergirl starts training Mon-El, whom she has taken under her wing.
Mon, Nov 7, 2016 60 mins
Supergirl faces a new challenge from a ruthless gang who are armed and dangerous with cutting-edge alien technology; at the same time, Kara gets Mon-El an internship at CatCo; James comes to an important decision; and Lena puts Kara's name on the guest list for one of her fund-raisers.
Mon, Nov 14, 2016 60 mins
The Guardian makes his debut in National City to lend a hand after a parasite alien drains Supergirl of her power; at the same time, Mon-El considers a less-than-desirable career change; and Alex struggles with a new reality.
The Darkest Places
Mon, Nov 21, 2016 60 mins
Guardian must clear his name after being accused of a murder committed by another vigilante; at the same time, Supergirl comes face to face with Cyborg Superman while on a solo mission to rescue Mon-El, who has been captured by Cadmus.
Mon, Nov 28, 2016 61 mins
A superhero crossover event begins with Barry Allen and Cisco Ramon from "The Flash" seeking Kara's help with an alien invasion; at the same time, Eliza comes to town to celebrate Thanksgiving with her daughters, which seems like the perfect opportunity for Alex to come out to her mother. Meanwhile, Winn and James consider telling Kara the truth about the Guardian; and Kara wants to team up with Lena Luthor to combat a deadly virus unleashed by CADMUS.
Mon, Jan 23, 2017 60 mins
The story of a missing woman named Izzy moves Kara to investigate, even though Snapper Carr has told her to leave the matter alone. When Kara and Mon-El check out the last place Izzy was seen, they end up thrust through a portal to another planet, where the downtrodden are sold as slaves as part of a trafficking ring run by Roulette. Meanwhile, Alex blames herself---and her new relationship with Maggie---for her sister's disappearance.
We Can Be Heroes
Mon, Jan 30, 2017 60 mins
Supergirl sets out to recapture Livewire, who has seemingly escaped from prison, but her efforts hit a road block when Mon-El puts Supergirl's safety before the citizens of National City. Meanwhile, James decides to be truthful with Kara; and M'Gann falls into a coma following a psychic attack.
The Martian Chronicles
Mon, Feb 6, 2017 60 mins
Armek arrives in National City intent on taking M'gann back to Mars to face her punishment as a traitor. Thinking she'll be safe at the DEO, Hank and Supergirl are in for a startling surprise when shapeshifter Armek is in the building and under disguise.
Mon, Feb 13, 2017 60 mins
Lena is arrested for helping break Metallo and Lillian Luthor out of prison. While the evidence seems stacked against her, Kara refuses to believe her friend is guilty and fights to clear Lena's name. Meanwhile, Alex and Maggie celebrate Valentine's Day.
Mr. & Mrs. Mxyzptlk
Mon, Feb 20, 2017 60 mins
A magical imp named Mr. Mxyzptlk shows up on Earth and declares his love for Kara, who tries to let him down easy. However, he won't take no for an answer and starts to wreak havoc on National City. As Mon-El and Kara argue over how to get rid of Mr. Mxyzptlk, Alex and Maggie celebrate their first Valentine's Day together.
Mon, Feb 27, 2017 60 mins
Alex and Kara are thrilled to have their father, Jeremiah Danvers, back after he's rescued from Cadmus. 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.
Mon, Mar 6, 2017 60 mins
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.
Mon, Mar 20, 2017 60 mins
A new villain comes to National City, putting Supergirl on high alert; at the same time, she faces an attack by the Music Meister. Meanwhile, Winn's girlfriend, Lyra, gets Winn in trouble with the law; and Maggie attempts to help Winn, but old loyalties get in the way.
Mon, Mar 27, 2017 60 mins
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.
Mon, Apr 24, 2017 60 mins
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.
Mon, May 1, 2017 60 mins
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.
City of Lost Children
Mon, May 8, 2017 60 mins
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. Meanwhile, Rhea's plan escalates.
Mon, May 15, 2017 60 mins
Supergirl grapples with whether or not to obey the President's orders regarding Rhea's latest actions. Meanwhile, Cat Grant returns to National City.
Nevertheless, She Persisted
Mon, May 22, 2017 60 mins
In the Season 2 finale, Supergirl challenges Rhea to battle to save National City. Meanwhile, Superman returns; and Cat Grant offers Supergirl some sage advice.