VIDEO : 'Supergirl' Star Teases New Challenge for Kara

Supergirl may be getting some unexpected help in the fight to defeat Reign, but according to series star Melissa Benoist that help comes with a new, unnerving challenge.In Monday's episode, "The Fanatical", a disciple of Thomas Coville's Cult of Rao escapes what's left of the group with a journal that may hold the key that ...