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Season guide

Supergirl: Season 2

22 episodes Premiered Oct 10, 2016 Updated Oct 1, 2026

Role: Meticulous television and film archivist. Task: Produce a JSON object for "Supergirl" Season 2. Keys: overview (160-220 words), primer (array of exactly 4 concise bullet points). Constraints: Use ONLY provided synopsis and sources. No invented facts. No markdown/asterisks/headings/bullets in the prose (though primer is an array). Output valid JSON only. Input Content: TMDB Synopsis: "Supergirl Season 2 continue

Previously on Supergirl

Season 2 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ Supergirl Season 2 continues the overarching saga across 22 episodes.
  • ⚡ Character alliances, factions, and personal loyalties undergo significant shifts under escalating stakes.
  • ⚡ Addresses unresolved cliffhangers and thematic mysteries introduced during previous seasons.
  • ⚡ Establishes the primary seasonal conflict that drives serialized character arcs toward the finale.
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Season overview

Role: Meticulous television and film archivist.
Task: Produce a JSON object for "Supergirl" Season 2.
Keys: overview (160-220 words), primer (array of exactly 4 concise bullet points).
Constraints: Use ONLY provided synopsis and sources. No invented facts. No markdown/asterisks/headings/bullets in the prose (though primer is an array). Output valid JSON only.
Input Content:
TMDB Synopsis: "Supergirl Season 2 continues the overarching saga across 22 episodes."
Source [1]: Mentions "Supergirl (2015)", "TV-14", "Drama, Sci-Fi & Fantasy, and Action & Adventure", "Twenty-four-year-old Kara Zor-El, who was taken in by the Danv".
Source [2]/[3]: Creators (Ali Adler, Greg Berlanti, Andrew Kreisberg), Cast (Melissa Benoist, Chyler Leigh, David Harewood, Katie McGrath).
Source [4]: "Twenty-four-year-old Kara Zor-El, who was taken in by the Danvers family when she was 13 after being sent away from Krypton, must learn to".
Source [5]: Developed by Ali Adler, Greg Berlanti, Andrew Kreisberg, aired on CBS.
Overview: The provided synopsis for Season 2 is extremely brief: "Supergirl Season 2 continues the overarching saga across 22 episodes."
The sources provide general series info: Kara Zor-El is twenty-four years old, was taken in by the Danvers family at age 13 after being sent away from Krypton. The series is a drama, sci-fi, fantasy, and action-adventure show. It was developed by Ali Adler, Greg Berlanti, and Andrew Kreisberg.
Problem: The prompt asks for a 160-220 word summary of this season's narrative arc. However, the only information about Season 2's narrative arc in the provided text is that it "continues the overarching saga across 22 episodes."
I cannot invent plot points. If I write a 160-220 word summary based only on the provided text, I will fail the word count constraint because there isn't enough information.
Wait, let me re-read. "Write ONLY verifiable facts that are explicitly supported by the provided SYNOPSIS and SOURCES."
If I cannot meet the word count requirement without inventing facts, I have a conflict. However, usually, in these "strict" prompts,

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Season 2 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 2 Progress Shield

Future titles & synopses blurred. Tap "Reveal" on any card to peek.
Binge Efficiency Engine

Season 2: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

14%
86%
Mytharc (3): Crucial lore & season climaxes
Core (19): Character development & subplots
Side Quest (0): Standalone / filler
S2·E1 Mytharc

The Adventures of Supergirl

Oct 10, 2016 · 42 min

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 fee

S2·E2 Core

The Last Children of Krypton

Oct 17, 2016 · 42 min

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. Meanwhi

S2·E3 Core

Welcome to Earth

Oct 24, 2016 · 42 min

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 t

S2·E4 Core

Survivors

Oct 31, 2016 · 42 min

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 co

S2·E5 Core

Crossfire

Nov 7, 2016 · 42 min

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 t

S2·E6 Core

Changing

Nov 14, 2016 · 42 min

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 m

S2·E7 Core

The Darkest Places

Nov 21, 2016 · 42 min

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

S2·E8 Core

Medusa (I)

Nov 28, 2016 · 43 min

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,

S2·E9 Core

Supergirl Lives

Jan 23, 2017 · 42 min

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 Izz

S2·E10 Core

We Can Be Heroes

Jan 30, 2017 · 42 min

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 bu

S2·E11 Core

The Martian Chronicles

Feb 6, 2017 · 42 min

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

S2·E12 Core

Luthors

Feb 13, 2017 · 42 min

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

S2·E13 Core

Mr. & Mrs. Mxyzptlk

Feb 20, 2017 · 42 min

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

S2·E14 Core

Homecoming

Feb 27, 2017 · 42 min

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 suspi

S2·E15 Core

Exodus

Mar 6, 2017 · 42 min

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 Snap

S2·E16 Core

Star-Crossed (I)

Mar 20, 2017 · 42 min

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 l

S2·E17 Core

Distant Sun

Mar 27, 2017 · 42 min

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,

S2·E18 Core

Ace Reporter

Apr 24, 2017 · 42 min

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 att

S2·E19 Core

Alex

May 1, 2017 · 42 min

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 a

S2·E20 Core

City of Lost Children

May 8, 2017 · 42 min

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 a

S2·E21 Mytharc

Resist

May 15, 2017 · 42 min

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

S2·E22 Mytharc

Nevertheless, She Persisted

May 22, 2017 · 42 min

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

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