“Fight or Flight” — Supergirl’s powers are tested when Reactron, one of Superman’s formidable enemies, arrives in National City and targets the young hero, on SUPERGIRL, Monday, Nov. 9 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: Melissa Benoist Photo: Cliff Lipson/CBS ©2015 CBS Broadcasting, Inc. All Rights Reserved

CBS have released the promo for the third episode of ‘Supergirl,’ titled “Fight or Flight.”

Official Synopsis:

“Fight or Flight” – Supergirl’s powers are tested when Reactron, one of Superman’s formidable enemies, arrives in National City and targets the young hero.  Also, Cat plans to run an exposé on Supergirl, on SUPERGIRL,Monday, Nov. 9 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Peter Facinelli guest stars as tech entrepreneur Maxwell Lord.

Stars: Melissa Benoist as Kara Danvers/Supergirl, Calista Flockhart as Cat Grant, Chyler Leigh as Alex Danvers, Mehcad Brooks as James Olsen, David Harewood as Hank Henshaw and Jeremy Jordan as Winslow “Winn” Schott.

Guest stars: Jenna Dewan-Tatum (Lucy Lane), Chris Browning (Ben Krull/Reactron), Jay Jackson (Male Newscaster), Briana Venskus (Agent Vasquez), John Churchill (Second Engineer), Majeed Nami (An Engineer), Pilar Holland (Female Newscaster), Nischelle Turner (Morning Talk Show Host), Nerlyn Jean  (Waitress), Joshua Triplett  (Passenger).

“Fight or Flight” was written by Michael Grassi and Rachel Shukert. Directed by Dermott Downs.

‘Supergirl’ will premiere on October 26th at 8:30-9:30pm before it moves to its primetime 8-9pm time slot on November 2nd.