It is best known for officially teasing the massive "Crisis on Infinite Earths" event. Plot Summary
The episode features a final showdown against John Deegan, forcing the heroes to travel to another Earth to stop him. Watch Supergirl s04e09 hdtv x264-sva[eztv]-1
Reviewers generally found the episode to be a "compelling" and "fun" conclusion that successfully balanced its large cast, though some felt the plot was occasionally "half-baked" to prioritize setting up the following year’s crossover. It is best known for officially teasing the