Morgan Edge and Lena Luthor Go to War in 'Supergirl' Episode "For Good"

The CW has released the official synopsis for Supergirl's January 29 episode, titled "For Good."

In the episode, some of the show's science-fiction elements take a back seat to the feud that has been simmering between Morgan Edge and Lena Luthor all season long.

You can check it out below.

MORGAN EDGE THREATENS LENA – Someone tries to kill Morgan Edge (guest star Adrian Pasdar) and he barely survives. He accuses Lena (Katie McGrath) 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 (Melissa Benoist) steps in to help her friend. Meanwhile, after Sam (Odette Annable) realizes she's losing time, she confides in Alex (Chyler Leigh) who decides to run some medical tests to see if she can find out what's going on with her new friend.

Tawnia McKiernan directed the episode with story by Robert Rovner and teleplay by Cindy Lichtman & Alix Sternberg.

Supergirl airs Monday nights at 8 p.m. ET/PT on The CW. "For Good" will premiere on January 29.