In three new photos from "Truth, Justice and the American Way," the next episode of "Supergirl," Kara takes on the Master Jailer in an effort to stop him from hunting down and executing escaped Fort Rozz prisoners.

An Alien Serial Killer Stalks New "Supergirl" Teaser

"Truth, Justice and the American Way" -- Supergirl does battle with the deadly Master Jailer (Jeff Branson), who is hunting and executing escaped Fort Rozz prisoners. Also, Cat hires a second assistant, Siobhan Smythe (Italia Ricci), who immediately tries to one-up Kara, and Kara and James disagree over the DEO's methods, on SUPERGIRL, Monday, Feb. 22 (8:00-9:00 PM, ET/PT) on the CBS Television Network.

"Supergirl" airs Mondays at 8 pm EST on CBS. Developed by producers Greg Berlanti, Ali Adler and Andrew Kreisberg, the series stars Melissa Benoist, Calista Flockhart, David Harewood and Chyler Leigh.