TR

Season 3, Episode 12

For Good

7.4/ 10January 29, 201842 min

Someone tries to kill Morgan Edge and he barely survives. He accuses Lena of being behind the attempt and vows to destroy her. When Lena fears her hatred for Morgan will take her to the Luthor dark side, Kara steps in to help her friend. Meanwhile, after Sam realizes she’s losing time, she confides in Alex who decides to run some medical tests to see if she can find out what’s going on with her new friend.

Directed by
Tawnia McKiernan
Written by
Cindy Lichtman, Robert Rovner, Alix Sternberg

Guest stars

All episodes — Season 3

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  1. S3 E1

    Girl of Steel

    Oct 9, 20176.942 min

    Kara deals with the loss of Mon-El by focusing all her energy on being Supergirl and the mysterious new threat against National City. Alex confesses a secret to Maggie about their impending nuptials. A citizen of National City has a mysteri

  2. S3 E2

    Triggers

    Oct 16, 20177.342 min

    Psi, a thief with psychic powers, attacks National City. Able to immobilize people by tapping into their worst fears, Psi proves a formidable opponent for Supergirl. Meanwhile, James and Lena are at an impasse, and Samantha starts her new j

  3. S3 E3

    Far From the Tree

    Oct 23, 20177.142 min

    Eliza throws Alex and Maggie a wedding shower, which causes Maggie to reach out to her estranged father. Supergirl joins J’onn on a personal mission.

  4. S3 E4

    The Faithful

    Oct 30, 20177.142 min

    Kara investigates a secretive new group whose leader, Thomas Coville, has a mysterious connection to Supergirl. Meanwhile, Samantha feels like she's letting Ruby down, and J'onn confesses an old secret.

  5. S3 E5

    Damage

    Nov 6, 20177.442 min

    When multiple children get sick from lead poisoning, Morgan Edge points the finger at Lena and blames her creation of the lead bomb she made to save National City from the Daxamites. While Lena knows she never intended any harm, she fears t

  6. S3 E6

    Midvale

    Nov 13, 20177.942 min

    Kara and Alex head home to Midvale 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 Danver sisters closer together.