AVClub: Supergirl’s secret identity doesn’t just keep her private life out of the public eye, it also allows her to express two very different sides of her personality. As National City’s hero she’s fearless, brave, and commanding; she can respond to a threat with a terse “Let them come” that would send chills down the spine of even the most terrifying supervillian. But as twenty-something assistant Kara Danvers she’s nervous, easily flustered, and prone to fits of giggles. While Melissa Benoist can seamlessly weave together the two sides of Kara’s personality, Supergirl can’t seem to do the same with its two settings. The bright, bubbly, character-focused world of CatCo often clashes with the dark, moody, action-focused world of the DEO. Even when both halves are strong, as they are tonight, the show still struggles to make them feel cohesive.