“Solitude” — Kara travels to Superman’s Fortress of Solitude in hopes of learning how to defeat Indigo (Laura Vandervoort, pictured), a dangerous being who can transport via the Internet and who has a connection to Kara’s past, on SUPERGIRL, Monday, Feb. 29 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: Michael Yarish/CBS ©2016 CBS Broadcasting, Inc. All Rights Reserved