Next week, Kara's (Melissa Benoist) superhero and civilian life find themselves on a collision course when Nyxly (Peta Sergeant) kidnaps William (Staz Nair) and holds him hostage, forcing the Girl of Steel to do her bidding and recover the remaining totems in exchange for his life.
Meanwhile, Alex (Chyler Leigh) finds herself facing the biggest challenge of her life, and based on the latest batch of promotional photos, it looks like there could be a major development in her relationship with Kelly (Azie Tesfai).
On a related note, The CW has announced that Supergirl will end its six-season run with a two-hour finale on Tuesday, November 9.
Check out the new promo and stills from episode fifteen, titled "Hope for Tomorrow," below:
"Hope for Tomorrow" - (9:00-10:00 p.m. ET) (TV- PG, V) (HDTV)
NYXLY KIDNAPS WILLIAM – Supergirl (Melissa Benoist) continues to fight Nyxly (Peta Sergeant) for the remaining totems but after Nyxly kidnaps William (Staz Nair), Supergirl realizes she needs to take a more proactive stance to keep National City safe. Meanwhile, Alex (Chyler Leigh) faces the biggest challenge of her life. The episode was directed by Tawnia McKiernan with story by Robert Rovner and teleplay by Emilio Ortega Aldrich & Nicki Holcomb (#615). Original airdate 10/12/2021.