Supergirl Season 4 ended with Lex Luthor revealing to his sister, Lena, that her friend Kara Danvers was in actuality the Last Daughter of Krypton. Season 5 has dealt with the aftermath of that revelation, with Lena plotting to destroy her former best friend. However, Katie McGrath, who plays Lena, doesn't think it's impossible for the two will reconcile.

"I think there's always potential, you know," McGrath said when asked by TV Guide about the possibility of a reconciliation. "I think the writers are very smart, and I think they have a very clear, articulated plan about what they're doing. And I would hate to think that you're not going to get Kara and Lena back as they were before. And I think fundamentally Lena is still a very good person, and I think she does just miss her friends. She misses Kara desperately, and part of me believes that Lena would do anything to get that back if it meant that Kara wouldn't, as she thought, betray her again. If Lena felt that Kara couldn't betray her again, I think Lena would do anything to get that friendship back. I think the illustration of that is how hurt she was. You couldn't feel that amount of hurt if you didn't actually care."

RELATED: Supergirl: Katie McGrath Is 'Flattered' Lena's in Crisis on Infinite Earths

McGrath joined Supergirl as Lena in Season 2. She was later upgraded from a recurring role to a regular for subsequent seasons of the show.

Airing Sundays at 9 p.m. ET/PT on The CW, Supergirl stars Melissa Benoist as Kara Danvers, David Harewood as Martian Manhunter, Mehcad Brooks as Jimmy Olsen and Chyler Leigh as Alex Danvers.

KEEP READING: How Supergirl's Leviathan Differs From the Comics