S4E9
Episode 9: Elseworlds, Part 3
⚠ Spoiler alert This recap gives away what happens in this episode.
Episode Summary & Review
Deegan “thinks big” and rewrites the reality of Earth-1 so that he’s the only superhero… and a familiar face. While Barry and Oliver try to contact Superman on Earth-38, Kara tries to get through to her foster sister Alex… who no longer remembers who Kara is.