Where To Stream Supergirl Season 3 Episode 17
Trinity
- Aired May 7, 2018
- 60 Min
- Rated 7.2
- Number 45 Of 126 Rated Episodes
Supergirl discovers that she has a mental link to Sam and Julia, and takes Lena and Alex with her to rescue them. Meanwhile, James faces a tough decision when he must decide whether to investigate Lena or not after she kept Reign's existence a secret.