Watch The Supergirl 4×17 Promo “All About Eve”

The promo for the new episode of Supergirl has been released. This new episode is titled “All About Eve” and it will air on March 31.

In this new episode, “Supergirl (Melissa Benoist) must deal with the destructive aftermath of Lex’s (guest star Jon Cryer) nefarious plans. Shocked at what Lex has created, Supergirl faces her biggest challenge yet.”

Source: The CW