Season 3 (Supergirl)

Season 3
Information
Number of episodes	23
Chronology
Preceded by	Season 2
Followed by	Season 4

Supergirl was renewed for a third season by The CW on January 8, 2017.

Cast

Main cast

• Melissa Benoist as Kara Danvers/Supergirl and Kara/Overgirl
• Mehcad Brooks as James Olsen/Guardian
• Chyler Leigh as Alex Danvers
• Jeremy Jordan as Winn Schott
• Katie McGrath as Lena Luthor
• Odette Annable as Samantha Arias/Reign
• Chris Wood as Mon-El
• David Harewood as J'onn J'onzz/Martian Manhunter

Special appearance by

• Calista Flockhart as Cat Grant
• Jessica Parker Kennedy as Nora Allen II

Special guest cast

• Floriana Lima as Maggie Sawyer
• Helen Slater as Eliza Danvers
• Grant Gustin as Barry Allen/The Flash
• Carlos Valdes as Cisco Ramon
• Stephen Amell as Oliver Queen/Green Arrow and Oliver/Black Arrow
• Victor Garber as Martin Stein/Firestorm
• Jesse L. Martin as Joe West
• Emily Bett Rickards as Felicity Smoak
• Caity Lotz as Sara Lance
• Tom Cavanagh as Harrison "Harry" Wells and Eobard Thawne/Reverse-Flash
• Dominic Purcell as Mick Rory
• Candice Patton as Iris West
• Franz Drameh as Jefferson Jackson/Firestorm
• Danielle Panabaker as Caitlin Snow/Killer Frost
• Keiynan Lonsdale as Wally West
• Laurie Metcalf as Mary McGowan

Recurring cast

• Sharon Leal as M'gann M'orzz/Miss Martian
• Brenda Strong as Lillian Luthor
• Andrea Brooks as Eve Teschmacher
• Curtis Lum as Demos
• Erica Durance as Alura Zor-El
• Adrian Pasdar as Morgan Edge
• Carl Lumbly as M'yrnn J'onzz
• Emma Tremblay as Ruby Arias
• Amy Jackson as Imra Ardeen/Saturn Girl
• Jesse Rath as Querl Dox/Brainiac 5
• Krys Marshall as Julia Freeman/Purity
• Chad Lowe as Thomas Coville
• Anjali Jay as Fortress of Sanctuary hologram
• Yael Grobglas as Gayle Marsh/Psi

Synopsis

Thirteen-year-old Kara escaped the doomed planet Krypton with her parents' help at the same time as the infant Kal-El. Protected and raised on Earth by her foster family, the Danvers, Kara grew up in the shadow of her foster sister, Alex, and learned to conceal the phenomenal powers she shares with her famous cousin in order to keep her identity a secret. Years later, Kara was living in National City and still concealing her powers, when a plane crash threatened Alex's life and Kara took to the sky to save her. Now, Kara balances her work as a reporter for CatCo Worldwide Media with her work for the Department of Extra-Normal Operations (D.E.O.), a super-secret government organization whose mission is to keep National City and the Earth safe from sinister threats. At the D.E.O., Kara works for J'onn J'onzz, the Martian Manhunter, and alongside her foster sister, Alex, and best friend, Winn Schott. Also in Kara's life are media mogul Cat Grant, James Olsen, a photojournalist who moonlights as Guardian, a masked vigilante, Lena Luthor, and Mon-El of Daxam, whose planet was ravaged by Krypton's destruction. As Kara struggles to navigate her relationships and her burgeoning life as a reporter, her heart soars as she takes to the skies as Supergirl to fight crime.

Confirmed plot points

• Alura Zor-El will appear in Dark Side of the Moon.

Episodes

are seriously injured by Pestilence, Supergirl and Imra team up to stop the destruction.

#	Episode name	Directed by	Story by	Teleplay by	Original airdate
1		style="background	="text-align:c	center; background-c	center; backgroun & olor:#{{ColorSwitch	October 9, 2017
nd-color:#{{ColorSwit deals with the loss of |[[Robert by focusing all her energy on being Supergirl and the mysterious new threat against Switch1|series=Su. rgirl}};" |October 9, confesses a secret to round-color:#{{ColorSwit about their impending nuptials. A citizen of National City has a mysterious connection to Kara, and sing all her en makes a bold move.
2	of National Ci	style="text-align:c	ground-color:#{{Co & Switch1|series=Supergi		October 16, 2017
Psi, a thief with psychic powers, attacks [[Gabriel Llanas]. Able to immobilize people by tapping into their worst fears, Psi proves a formidable opponent for girl}};" |October 16, 2017. Meanwhile, background-colo and ColorSwitch1|se are at an impasse, and Samantha starts her new job at ic powers,.
3	Olsen]] and [[Lena Lutho	xt-align:center;	color:#{{ColorSwitc & series=Supergir		October 23, 2017
{ColorSwitch1|series=Su throws };" colspan="2" |Je and Queller & [[Derek Sim a wedding shower, which causes Maggie to reach out to her estranged father. rgirl}};" |October 23, 201 joins style="background-colo on a personal mission.
4	ranged father. [[Ka	e="text-align:	kground-color & {ColorSwitch1|series=		October 30, 2017
Kara investigates a secretive new group whose leader, a Yoo]] & [[Katie , has a mysterious connection to Supergirl. Meanwhile, lor:#{{ColorSwitch1|series= feels like she's letting 2017
s confesses an old secret.
5	e she's letti	style="text-align:center; background-color:#EBF0FF;"	style="text-a	; background-colo & {{ColorSwitch1|ser		November 6, 2017
When multiple children get sick from lead poisoning, Carrasco]] & [ points the finger at yle="text-align:cent and blames her creation of the lead bomb she made to save November 6, 2017 from the ="background-. While Lena knows she never intended any harm, she fears there may have been a flaw in her design, leaving her responsible. points the finger at teams up with ena]] and blames her creati to clear Lena’s name, but it turns out to be harder than they thought. Meanwhile, e Lena knows she neve and ended any harm, she fear make a crucial decision about the future of their relationship.
6	and [[Maggie	style="text-ali	background-color:#{ & lorSwitch1|seri		November 13, 2017
Kara and Alex head home to rl}};" colspan="2" |[[Caitlin for a little R&R. While there, Kara recalls a painful memory of a childhood friend’s death and how that traumatic experience brought the Danvers sisters closer together.
7	friend’s death	style="text-	r; background-colo & EBF0FF and the team discover an alien ship has crash landed deep underwater beneath n:center; backgro, d-color:#{{ColorSwitch1|series= is called in to investigate. Meanwhile, le="background-color: attempts to bond with his father, " colspan="6" |When Winn and the team, eager for some understanding of the changes she has been experiencing, looks to her estranged mother, Supergirl]] is cal, for answers.
8	es she has been experiencing, lo	:center; backg	ground-color:#Template:Colo & itch1;", olspan="6" |Barry and [[Iri, Iris West and wedding brings t to take on their most formidable villains yet. Earth’s mightiest heroes – ceremony. All of the superhe, es band together with help, rom their super friends l and [Leo Snart|Citizen Cold]], – lead their teams into battle to save the world.
9	The Flash]]		style="text-	r; background & lor:#{{ColorSwitch1		December 4, 2017
#FAF2E1;" colspa and |[[Kara Danver continues to build, causing mysterious symbol pop to step in and offer up some protection, and possibly igniting a spark in the process.
10	mes]] to step in and offer up	gn:center; bac	lor:#{{ColorSwi & 1|series=Supergir		January 15, 2018
EBF0FF;" colspan="2" |Derek Simon & Eric Carrasco						January 15, 2018
Struggling to heal from her injuries inflicted by Reign,
11	r rampage on the	yle="text-align:c	kground-color:#Template:C & rSwitch1; continues to terrorize Llanas]] & Anna Musky-G, dwyn		, and the two recruit Supergirl’s former enemies, "background-color:#{{Color and h1|series=Supergirl, to form a team for a mission to ias|Reign]] continues to terrori to recover a prisoner who has information on how to defeat Reign once and for all. Meanwhile, rl]], and the two rec babysits girl’s former enemi.
12	efeat Reign onc	tyle="text-align:cen	enter; background	ter; background-co & :#{{ColorSwitch1|s	January 29, 2018
Someone tries to kill 1|series=Superg and he barely survives. He accuses Sternberg]]						series=Supergi steps in to help her friend. Meanwhile, after gan Edge]] and he bare realizes she's losing time, she confides in of being behind the a who decides to run some medical tests to see if she can find out what's going on with her new friend.
13	es to run some medica	text-align:cen	round-color:#{{Colo & itch1|series=		February 5, 2018
The olorSwitch1|se captures a second World killer, [Jessica Queller]] & P. la Yoo						style="text-ali and nter; background-colo use very different methods of interrogation with Purity in the hopes of finding out how to defeat Reign. However, Purity escapes and attacks the city's subway tunnels. Meanwhile, iller, Julia Freeman, urity. Kara Danv and upergirl band together to fix ex]] use very ship.
14	'onzz|J'onn]], [[Winn Schott|Wi	:center; backgr	:#FAF2E1;"		April 16, 2018
When lorSwitch1|series=Supergirl}};" cols dies, his estranged mother, & Derek Simon						, reappears trying to reconnect and to explain why she abandoned him all those years ago. 2018
style="ba is too embittered from his rough childhood to forgive her but when a copycat Toyman attacks, the two must work together to stop him. Mary Sc tells ry, reappears tryin something important about the Worldkillers, and im all those years ag becomes suspicious of is too embittered from 's recent behavior.
15	and Alex be	gn:center; backgrou	ound-color:#{{Col	nter; background-colo & {{ColorSwitch1|se	April 23, 2018
d-color:#{{ColorSwitch1| inadvertently causes psychic disturbances at the cki Holcomb]] style="text-align center; must work with :#{{ColorSwitch1|serie to contain the chaos; 23, 2018						begins training Kara in fighting techniques he's learned in the future.
16	he chaos; [[Mon-El]	="text-align:center; b	color:#Template:ColorSwit &;"		April 30, 2018
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17	n are seriou	style="text-align:c & er; background-	d-color:#Template:ColorSwi;" |'s secret, rish & Derek Simon	series=Superg united, Supergirl and the team brace for an epic battle.
18	hree [[World killers|Worldkil	gn:center; backgro	round-color:#{{Co	enter; background-c & r:#{{ColorSwitch1|ser	May 14, 2018
When or:#{{ColorSwitch1|serie starts hunting |[[Lindsay Gelfand], & Allison Weintraub						May 14, 2018	look to ="background-color:#{{ColorSwit for advice on how to stop Reign and come away with some shocking news.
19	Arias|Sam's mother]	"text-align:cente	nd-color:#EBF0FF;" colspan="2's, escapes from what's left of his cult, she gives align:center; background and r:#{{ColorSwitch1|ser a journal that could hold the key to saving ackground-color:#Template:Col. Someone learns Guardian's identity and threatens to expose James if he doesn't do what they ask. James contemplates what it means to be a black vigilante without a mask in America.		style="t	May 28, 2018ef name="ep20"/>	st
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Supergirl]] is stunned to discover that a part of Krypton survived. Meanwhile, Alex is attacked while out with Ruby, and [[Lena L
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Gallery

Promotional images

"Flying Solo"

First look at Reign.

Mon El Ring.png

Legion's Ring

Mon El Suit.png

Mon-El suits up

Mon-El (Valor).jpg

Mon-El's new suit

New Season 3 Poster.png

"Miss Me?"

Videos

Supergirl Comic-Con® 2017 Trailer The CW

Supergirl Inside Supergirl Season 3 Behind The Scenes The CW

Supergirl Season 3 Inside (HD)

Supergirl Season 3 Producer's Preview (HD)

Supergirl Official Season 3 Trailer The CW

DCTV Crisis on Earth-X Crossover Teaser - The Flash, Arrow, Supergirl, DC's Legends of Tomorrow (HD)

Crisis on Earth-X Weapon Trailer The CW

Crisis On Earth-X Sizzle The CW

Supergirl Catch Up The CW