Supergirl: Kara Is "Desperate to Win Everyone's Trust Back"

The consequences of Kara's (Melissa Benoist) Red Kryptonite trip continue on Monday's Supergirl as the bulletproof superhero attempts to win back the trust of her city and loved ones.

"Kara is a little desperate to win everyone's trust back. She obviously has never experienced anything like the fallout of Red Kryptonite," Benoist tells TVGuide.com. "It's actually funny how much she tries and the ways that she tries to gain the city's trust back."

Supergirl and The Flash crossover photos debut Silver Banshee

That includes James Olsen (Mehcad Brooks), who made it clear he isn't ready to hear how Kara feels about him after the jealous tangent she went on about his ex-girlfriend, Lucy Lane (Jenna Dewan-Tatum). It'll be a long road back to potential romance for the two crime fighting pals, but Benoist is optimistic that they'll find their way back to each other. "Their timing is so terrible, hers especially in the last episode when she said some things that you can't really take back," the actress says. "There's a lot to come for them though. I don't think it's going to end badly."

That same optimism isn't there when it comes to J'onn J'onzz (David Harewood) who revealed his true identity last week to save Kara from killing her adopted sister Alex (Chyler Leigh). The reveal has landed him in prison at the DEO instead of running it. Monday'sepisode will force Kara to come face to face with exactly what she forced J'onn to give up to protect her and her sister.

CBS sets finale dates for NCIS, Big Bang, Supergirl, more

"Seeing Hank in prison might possibly be the guiltiest she has ever felt. It is kind of her fault," Benoist explains. "He's such a paternal figure to her and Alex that there's a lot of pain involved in seeing him locked up when she knows the truth about him. He's actually an ally and a force of good."

J'onn's imprisonment will lead to the full story of how he became Hank Henshaw and took over the DEO coming out. Benoist reveals that J'onn and Hank won't be the only people that the audience - and Kara and Alex - will learn a lot more about. "J'onn J'onzz is 350 years old so there's a lot about him that [Kara] doesn't know. There's a lot about Jeremiah Danvers [Dean Cain] that everyone is unaware of," she says. "There's a lot revealed in the next episode. "

Supergirl airs Mondays at 8/7c on CBS.

(Full disclosure: TVGuide.com is owned by CBS)