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 method... (more)s.

Blake Berris, Briana Venskus, Chris Vance, Italia Ricci, Jacqueline Grace Lopez, Jeff Branson, Jenna Dewan, Laura Benanti, Peter Facinelli, Ray Campbell, Todd Sherry