Supergirl does battle with the deadly Master Jailer, who is hunting and executing escaped Fort Rozz prisoners. Also, Cat hires a second assistant, Siobhan Smythe, who immediately tries to one-up Kara, and Kara and James disagree over the DEO's methods.
Quest roles:
Laura Benanti(Alura Zor-El), Briana Venskus(Agent Susan Vasquez), Peter Facinelli(Maxwell Lord), Chris Vance(Non), Jenna Dewan(Lucy Lane), Italia Ricci(Siobhan Smythe / Silver Banshee), Jeff Branson(Carl Draper / Master Jailer), Todd Sherry(Professor Alphonse Luzano), Blake Berris(Gabriel Phillips), Ray Campbell(Detective Warren)