When a conflict in Eastern Europe threatens to escalate, Team Scorpion is called on to help facilitate secret peace talks to prevent World War III.

Supergirl investigates a mysterious symbol popping up all over National City, tracing its origins back to an ancient prophecy and the mark of the World Killer, Reign. Meanwhile, the tension…

As the town’s mayoral race between Fred and Hermoine heats up, Hiram sets his sights on a new ally – Sheriff Minetta. Betty turns to Cheryl for help when she…