The Season 3 Finale of SUPERGIRL is here and the questions are already swirling on what it will all mean for season 4!

Supergirl (Melissa Benoist) and team take on Serena in an epic battle for Earth.

Director: Jesse Warn

Writers: Jerry Siegel (based on characters created by), Joe Shuster
(based on characters created by)

Stars: Melissa Benoist, Mehcad Brooks, Chyler Leigh