Supergirl A parasitic alien attaches itself to Kara (Melissa Benoist) and traps her in an idyllic dream where her home planet is intact and her family is alive in this new episode. 8 p.m. CBS
Superstore After a long day on the sales floor, the entire staff must spend the night in the store waiting for a delivery. America Ferrera, Mark McKinney, Ben Feldman and Lauren Ash star in a new episode of the workplace comedy. 8 p.m. NBC
Crazy Ex-Girlfriend Rebecca (Rachel Bloom) composes a text message revealing her feelings for Josh (Vincent Rodriguez III) that she intends to send to Paula (Donna Lynne...