The CW has released an official trailer for the Season 3 premiere of Supergirl. With the premiere episode, Girl of Steel, we find Kara (Melissa Benoist) still reeling from the loss of Mon-El (Chris Wood). She has decided that Kara Danvers is a waste of time and effort, she only needs to be Supergirl. But her friends and family try to make her see that her humanity is an important part of who she is.
The new season will introduce us to the Worldkiller, Reign (Odette Annable), J'onn J'onzz father M'yrnn J'onzz (Carl Lumbly) and Morgan Edge (Adrian Pasdar). We'll also have Erica Durance from Smallville stepping in as Kara's mother Alura Zor-El. Durance isn't the only legacy casting, as Lumbly used to voice Martian Manhunter on the Justice League animated series. The other big change is that Floriana Lima who plays Maggie Sawyer is no longer a series regular, but producers say that it does not mean the end of the Maggie/Alex (Chyler Leigh) relationship.
Supergirl will be a full participant in the four-series crossover event coming up in November that will feature the wedding of Barry Allen (Grant Gustin) and Iris West (Candice Patton) and will introduce the Supergirl of Earth-X, where the Nazis won World War II.
Supergirl returns Monday, October 9th at 8 p.m. ET on the CW.