Kara Danvers must journey to the Fortress of Solitude before she can stand a chance against Indigo! Uncover the <a href="/hashtag/dctv?refid=13&__tn__=%2Cg"> <span > #</span><span >DCTV</span></a> Secrets hidden in tonight's episode of Supergirl: <a href="https://bit.ly/1WSGBg0" target="_blank"> <span> http://bit.ly/</span><wbr /><span ></span>1WSGBg0</a>