Supergirl Season 4 Episode 17: (All About Eve)
SUPERGIRL FACES HER BIGGEST CHALLENGE YET — 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.
Directed by: Gabriel Llanas
Written by: Katie Rose Rogers & Brooke Pohl (#417)
Original US airdate (for Supergirl’s episode) 31 March 2019
Original Aus airdate: 01 April 2019