text: "Hostile Takeover" -- Kara goes toe-to-toe with Astra when her aunt challenges Kara's beliefs about her mother, on SUPERGIRL, Monday, Dec. 14 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured left to right: Chyler Leigh and Melissa Benoist Photo: Monty Brinton/CBS ÃÂ©2015 CBS Broadcasting, Inc. All Rights Reserved