‘Supergirl’ Review: Milly Alcock Sparks Punkish Chaos and Jason Momoa Brings Bad-Boy Energy, but DC’s Latest Caped Caper Is Stuck on Autopilot

Milly Alcock takes to the skies in DC's 'Supergirl,' Craig Gillespie's interplanetary action saga, also starring Jason Momoa and Matthias Schoenaerts.