The CW is getting a look at the next episode of Supergirl that’s set to arrive with “O Brother, Where Art Thou?,” which is scheduled for a March 17th, 2019 debut.
The series airs on The CW with streaming the day after through their site and app.
The 15th episode of the 4th season, it’s directed by Tawnia McKiernan based on the screenplay by Derek Simon and Nicki Holcomb.
Supergirl 4x15 Promo "O Brother, Where Art Thou?" (HD) Season 4 Episode 15 Promo