Where To Stream Supergirl Season 3 Episode 21
Not Kansas
- Aired June 4, 2018
- 60 Min
- Rated 6.6
- Number 121 Of 126 Rated Episodes
Kara and Mon-El return to Argo City, but not all is as it seems. Meanwhile, in Supergirl's absence, Guardian and the DEO deal with a dangerous gunman wielding DEO weaponry.