Warning: This article contains spoilers from the 100th episode ofSupergirl, which aired Sunday night.
Lena Luthor will have to take a hard look at herself afterSupergirls 100th episode.
From now on, youre accountable for your own actions.

Credit: Katie Yu/The CW
If you decide to forgive me, I will be there for you, said Kara.
Just like I would any other villain.
And from now on, your actions are your actions, and my actions are my actions.
No one is fully in the blame and no one is fully the opposite, fully innocent.
And this gave us a good turning point in that season-long exploration.
Having Mxy in the mix also helped make this episode very, very playful.
Did you recast the rolebecauseyou wanted this version to be less malevolent?ROVNER:Yeah, 100%.
We wouldve definitely featured her if the scheduling had worked out.ROVNER:And also, Mehcad was unavailable.
He was shooting a feature so he couldnt come back, although hes in the episode.
What can you say about where the season is heading?ROVNER:I think everything is heating up.
We see Leviathan plans moving forward in a much bigger way.
And its a beautiful score that Blake Neely wrote for it.
Supergirlflies in with a new episode Sunday, March 3 at 9 p.m. on The CW.