New to the cast for the fourth season is Sam Witwer as Agent Liberty, Rhona Mitra as Mercy Graves, and Bruce Boxleitner as Vice President Baker.
The CW has released the Supergirl episode 4.07 promo, where our hero ends up captured by the evil Agent Liberty, who imprisons her in what looks like a pretty formidable structure, declaring that it’s “for the good of humanity.”
New episodes of Supergirl premiere Sunday at 8/7c on The CW.