About Supergirl Season 1, Episode 3 : 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. Guest Stars: Peter Facinelli, Jenna Dewan, Chris Browning, John Churchill, Nerlyn Jean, Angela Meryl, Majeed Nami, Joshua Triplett, Nischelle Turner, Jay Jackson, Pilar Holland, Briana Venskus,