“The Flash” is back Tuesday night with part four of its five-part “Armageddon” event on The CW — and with this episode, Alex Danvers joins the fold. Chyler Leigh is playing her “Supergirl” character ...

Is Supergirl about to shed her secret identity for good?! ET has your exclusive sneak peek at the first footage from the CW drama's highly anticipated third season, and it seems like Kara Danvers ...