NewThe CW’s Supergirl Chronology

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The CW Network’s new take on Supergirl, plus its tie-ins and crossovers.

Season One

Supergirl, episodes 1-10
The Adventures of Supergirl, chapter 1
Comic tie in story
Supergirl, episodes 11-12
The Adventures of Supergirl, chapter 2
Comic tie in story
Supergirl, episode 13
The Adventures of Supergirl, chapter 3
Comic tie in story
Supergirl, episode 14
The Adventures of Supergirl, chapter 4
Comic tie in story
Supergirl, episode 15
The Adventures of Supergirl, chapter 5
Comic tie in story
Supergirl, episode 16
The Adventures of Supergirl, chapter 6
Comic tie in story
Supergirl, episode 17
The Adventures of Supergirl, chapter 7
Comic tie in story
Supergirl, episode 18
This episode features a guest appearance by the Flash which takes place wholly within episode 18, season 2 of The Flash
The Adventures of Supergirl, chapter 8
Comic tie in story
Supergirl, episode 19
The Adventures of Supergirl, chapter 9
Comic tie in story
Supergirl, episode 20
The Adventures of Supergirl, chapters 10-13
Comic tie in story

Season Two

Supergirl, episodes 1-8
Episode 8 is a prelude to the Invasion event
The Flash, season 3, episode 8
Part one of the Invasion event
Arrow, season 5, episode 8
Part two of the Invasion event
Legends of Tomorrow, season 2, episode 7
Part three of the Invasion event
Supergirl, episodes 9-11
The Flash, season 3, episode 11
A brief appearance with no real bearing on the plot of Supergirl
Supergirl, episodes 12-13
Supergirl: Age of Atlantis
Middle school book published in 2017
Supergirl: Curse of the Ancients
Middle school book published in 2018.
Supergirl: Master of Illusion
Middle school book published in 2019.
Supergirl, episodes 14-16
The Flash, season 3, episode 17
Supergirl appears in this episode, a continuation of a story from episode 16 of her series
Supergirl, episodes 17-22

Season Three

Supergirl, episodes 1-8
Episode 8 is part one of the Crisis on Earth-X event
Arrow, season 6, episode 8
Part two of the Crisis on Earth-X event
The Flash, season 4, episode 8
Part three of the Crisis on Earth-X event
Legends of Tomorrow, season 3, episode 8
Part four of the Crisis on Earth-X event
Supergirl, episodes 9-22

Season Four

Supergirl, episodes 1-8
The Flash, season 5, episode 9
Part one of the Elseworlds event
Arrow, season 7, episode 9
Part two of the Elseworlds event
Supergirl, episodes 9-22
Episode 9 is part three of the Elseworlds event

Season Five

Supergirl, episodes 1-9
Episode 9 is part one of the Crisis on Infinite Earths event.
Batwoman, season 1, episode 9
Part two of the Crisis on Infinite Earths event.
The Flash, season 6, episode 9
Part three of the Crisis on Infinite Earths event.
Arrow, season 8, episode 8
Part four of the Crisis on Infinite Earths event.
Legends of Tomorrow, season 5, episode 1
Part five of the Crisis on Infinite Earths event.
Following the Crisis on Infinite Earths, subsequent episodes of Supergirl take place on Prime Earth.

This world is also Earth 38 in the Arrowverse.

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