Watch the entire episode for free here with no login <br />http://www.cwtv.com/shows/supergirl <br /> <br />This entire fight was great and it puts Supergirl in actual peril. She's got her work cut out for her for sure. <br /> <br />Supergirl traces the origins of a mysterious symbol to an ancient prophecy and the mark of the World Killer, Reign. <br />Director: Glen Winter <br />Writers: Jerry Siegel (based on characters created by), Joe Shuster (based on characters created by) <br />Stars: Melissa Benoist, Mehcad Brooks, Chyler Leigh
