Big news fans of the Superman/Supergirl television and film universes! Helen Slater, who played Supergirl in the 1984 film and Dean Cain, who played Superman on the television show Lois & Clark, will appear on CBS' upcoming Supergirl show, according to TVLine. As of right now, there is no news who they are playing, as it is top secret.
Who will these two people play? What are your guesses?