The CW has released the first promo for Supergirl episode 4.19, titled “American Dreamer,” featuring Dreamer taking over Kara’s superhero responsibilities while she takes a temporary hiatus from being Supergirl.
James (Mehcad Brooks) takes drastic measures to relieve his PTSD.”
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.