The Aftermath - Supergirl
Watch Supergirl Season 4 Episode 17
"All About Eve"
Original Air Date:

On Supergirl Season 4 Episode 17, Supergirl faces her biggest challenge yet as she must deal with the destructive aftermath of Lex's nefarious plans.

Lex Luthor's Next Plan - Supergirl
Watch Supergirl Season 4 Episode 16
"The House of L"
Original Air Date:

On Supergirl Season 4 Episode 16, Lex Luthor reveals all about his daring plan to rid the world of Supergirl, but how far will he go to win the battle?

Kara and Alex Hug It Out - Supergirl
Watch Supergirl Season 4 Episode 15
"O Brother, Where Art Thou?"
Original Air Date:

On Supergirl Season 4 Episode 15, Lex Luthor gets a furlough from prison due to ill health, but what is the villain's master plan to take down a hero?

Worried For Everyone's Safety - Supergirl
Watch Supergirl Season 4 Episode 14
"Stand and Deliver"
Original Air Date:

On Supergirl Season 4 Episode 14, with Ben Lockwood's push to stir up the anti-alien movement, Supergirl is worried about the safety of both humans and aliens.

Catching Manchester Black - Supergirl
Watch Supergirl Season 4 Episode 13
"What's so Funny About Truth, Justice, and the American Way?"
Original Air Date:

On Supergirl Season 4 Episode 13, Supergirl pulls double duty as she tries to apprehend Manchester Black and his team and deal with a shocking new development.

Looking For a Distraction - Supergirl
Watch Supergirl Season 4 Episode 12
"Menagerie"
Original Air Date:

On Supergirl Season 4 Episode 12, Kara decides to team up with J'onn on his latest P.I. assignment but it ends up tying directly into Alex's current situation.

Embrace Her Destiny - Supergirl
Watch Supergirl Season 4 Episode 11
"Blood Memory"
Original Air Date:

On Supergirl Season 4 Episode 11, Nia is encouraged to embrace her destiny and Alex deals with a drug that turns people violent and gives them superpowers.

Colonel Haley - Supergirl
Watch Supergirl Season 4 Episode 10
"Suspicious Minds"
Original Air Date:

On Supergirl Season 4 Episode 10, Colonel Haley and Supergirl clash when she handles a distress call from a Navy ship that turns out to be an alien attack.

Cheers! - Supergirl
Watch Supergirl Season 4 Episode 9
"Elseworlds, Part Three"
Original Air Date:

On Supergirl Season 4 Episode 9, the Elseworlds crossover continues, and Cisco continues to cause problems for his former friends. Can anyone get through to him?

Persuading Nia - Supergirl
Watch Supergirl Season 4 Episode 8
"Bunker Hill"
Original Air Date:

On Supergirl Season 4 Episode 8, Kara and Brainy try to persuade Nia to embrace her destiny after she has a powerful dream about Agent Liberty.

Supergirl Quotes

Beth: You know it's true what they say, behind every great man is a strong woman.
Lena: I wouldn't know, I've never stood behind a man.

Winn: I try to stay out of people's relationships.
Alex: Like you stayed out of Kara's relationship?