“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 left to right: Mehcad Brooks, Jenna Dewan-Tatum and Melissa Benoist Photo: Trae Patton/CBS ©2015 CBS Broadcasting, Inc. All Rights Reserved