S2E22
Episode 22: Nevertheless, She Persisted
⚠ Spoiler alert This recap gives away what happens in this episode.
Episode Summary & Review
Lillian comes up with the ultimate weapon to drive the Daxamites off of Earth, but Supergirl is reluctant to make the sacrifice necessary. Instead, she challenges Rhea to a ritual trial by combat to save National City and Earth. Superman returns. Cat Grant offers Supergirl some sage advice.