Sneak Peek new footage, plus images from the "Supergirl" episode "Alex", written by Eric Carrasco, Greg Baldwin and directed by Rob Greenlea, airing May 1, 2017 on The CW:
"...'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' (Teri Hatcher) has an interesting proposal for 'Lena' (Katie McGrath)..."
Click the images to enlarge and Sneak Peek "Supergirl: Alex"...