Could it be that Rhea (Teri Hatcher) is behind the abduction? Or is it that there are humans who will be able to use Supergirl's personal life against her following the events of the next new episode, which appears to have her identity at least partially revealed?
Check out the official synopsis below.
Alex (Chyler Leigh) is kidnapped and the kidnapper threatens to kill her unless Supergirl (Melissa Benoist) releases a notorious criminal from prison. Supergirl and Maggie (Floriana Lima) have always had different approaches to apprehending criminals but this time they must work together to save Alex. Meanwhile, Rhea (guest star Teri Hatcher) has an interesting proposal for Lena (Katie McGrath). Rob Greenlea directed the episode written by Eric Carrasco & Greg Baldwin (#219). Original airdate 5/1/2017.