Reign
- Episode aired Dec 4, 2017
- TV-14
- 42m
Supergirl traces the origins of a mysterious symbol to an ancient prophecy and the mark of the World Killer, Reign.Supergirl traces the origins of a mysterious symbol to an ancient prophecy and the mark of the World Killer, Reign.Supergirl traces the origins of a mysterious symbol to an ancient prophecy and the mark of the World Killer, Reign.